AmazingAng · XdpCs · Oct 26, 2025 · Oct 26, 2025
diff --git a/Languages/en/01_HelloWeb3_en/readme.md b/Languages/en/01_HelloWeb3_en/readme.md
@@ -1,6 +1,6 @@
 # WTF Solidity Tutorial: 1. HelloWeb3 (Solidity in 3 lines)
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/02_ValueTypes_en/readme.md b/Languages/en/02_ValueTypes_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 2. Value Types
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 ## Variable Types

diff --git a/Languages/en/04_Return_en/readme.md b/Languages/en/04_Return_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 4. Function Output (return/returns)
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 In this chapter, we will introduce the `Solidity` function output, including returning multiple values, named returns, and reading full or part of return values using destructuring assignments. 

diff --git a/Languages/en/05_DataStorage_en/readme.md b/Languages/en/05_DataStorage_en/readme.md
@@ -1,12 +1,12 @@
 # WTF Solidity Tutorial: 5. Data Storage and Scope
 
-Recently, I have been relearning Solidity, consolidating the finer details, and also writing a "WTF Solidity Tutorial" for newbies to learn. Lectures are updated 1~3 times weekly. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
-Everyone is welcome to follow my Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science)
+Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
-WTF Academy Discord: [Link](https://discord.gg/5akcruXrsk)
+Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
-All codebase and tutorial notes are open source and available on GitHub (At 1024 repo stars, course certification is unlocked. At 2048 repo stars, community NFT is unlocked.): [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)\
+Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
 -----
 

diff --git a/Languages/en/06_ArrayAndStruct_en/readme.md b/Languages/en/06_ArrayAndStruct_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 6. Array & Struct
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 In this lecture, we will introduce two important variable types in Solidity: `array` and `struct`.

diff --git a/Languages/en/07_Mapping_en/readme.md b/Languages/en/07_Mapping_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 7. Mapping
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 In this section, we will introduce the hash table in Solidity: `mapping` type.

diff --git a/Languages/en/08_InitialValue_en/readme.md b/Languages/en/08_InitialValue_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 8. Initial Value
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 ## Initial values of variables

diff --git a/Languages/en/09_Constant_en/readme.md b/Languages/en/09_Constant_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 9. Constant and Immutable
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 In this section, we will introduce two keywords to restrict modifications to their state in Solidity: `constant` and `immutable`. If a state variable is declared with `constant` or `immutable`, its value cannot be modified after contract compilation.

diff --git a/Languages/en/10_InsertionSort_en/readme.md b/Languages/en/10_InsertionSort_en/readme.md
@@ -1,14 +1,13 @@
 # WTF Solidity Tutorial: 10. Control Flow
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
 
-
 -----
 
 In this section, we will introduce control flow in Solidity, and write an insertion sort (`InsertionSort`), a program that looks simple but is actually bug-prone.

diff --git a/Languages/en/11_Modifier_en/readme.md b/Languages/en/11_Modifier_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial: 11. Constructor & Modifier
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/12_Event_en/readme.md b/Languages/en/12_Event_en/readme.md
@@ -9,7 +9,7 @@ tags:
 
 # WTF Solidity Tutorial: 12. Events
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/13_Inheritance_en/readme.md b/Languages/en/13_Inheritance_en/readme.md
@@ -9,7 +9,7 @@ tags:
 
 # WTF Solidity Tutorial: 13. Inheritance
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/14_Interface_en/readme.md b/Languages/en/14_Interface_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial: 14. Abstract and Interface
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/15_Errors_en/readme.md b/Languages/en/15_Errors_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial: 15. Errors
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/16_Overloading_en/readme.md b/Languages/en/16_Overloading_en/readme.md
@@ -8,7 +8,7 @@ tags:
 ---
 # WTF Solidity Tutorial: 16. Overloading
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/17_Library_en/readme.md b/Languages/en/17_Library_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial: 17. Library: Standing on the shoulders of giants
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/18_Import_en/readme.md b/Languages/en/18_Import_en/readme.md
@@ -9,7 +9,7 @@ tags:
 
 # WTF Solidity Tutorial: 18. Import
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/19_Fallback_en/readme.md b/Languages/en/19_Fallback_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial:  19. Receive ETH,  receive and fallback
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/21_CallContract_en/readme.md b/Languages/en/21_CallContract_en/readme.md
@@ -9,7 +9,7 @@ tags:
 
 # WTF Solidity Tutorial: 21. Interact with other Contract
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/22_Call_en/readme.md b/Languages/en/22_Call_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Tutorial: 22. Call
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/23_Delegatecall_en/readme.md b/Languages/en/23_Delegatecall_en/readme.md
@@ -10,13 +10,14 @@ tags:
 
 # WTF Solidity Tutorial: 23. Delegatecall
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
+
 -----
 
 ## `delegatecall`

diff --git a/Languages/en/24_Create_en/readme.md b/Languages/en/24_Create_en/readme.md
@@ -9,13 +9,14 @@ tags:
 
 # WTF Solidity Tutorial: 24. Creating a new smart contract in an existing smart contract
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
+
 -----
 
 On Ethereum, the user (Externally-owned account, `EOA`) can create smart contracts, and a smart contract can also create new smart contracts. The decentralized exchange `Uniswap` creates an infinite number of `Pair` contracts with its `Factory` contract. In this lecture, I will explain how to create new smart contracts in an existed smart contract by using a simplified version of `Uniswap`.

diff --git a/Languages/en/25_Create2_en/readme.md b/Languages/en/25_Create2_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # Solidity Minimalist Tutorial: 25. Create2
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/26_DeleteContract_en/readme.md b/Languages/en/26_DeleteContract_en/readme.md
@@ -9,13 +9,14 @@ tags:
 ---
 # WTF Solidity Tutorial: 26. DeleteContract
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
+
 ---
 
 ## `selfdestruct`

diff --git a/Languages/en/27_ABIEncode_en/readme.md b/Languages/en/27_ABIEncode_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # Solidity Minimalist Tutorial: 27. ABIEncode&Decode
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/28_Hash_en/readme.md b/Languages/en/28_Hash_en/readme.md
@@ -8,7 +8,7 @@ tags:
 ---
 # WTF Solidity Tutorial: 28. Hash
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/29_Selector_en/readme.md b/Languages/en/29_Selector_en/readme.md
@@ -8,13 +8,14 @@ tags:
 ---
 # WTF Solidity Tutorial: 29. Function Selector
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 
 Community: [Discord](https://discord.gg/5akcruXrsk)｜[Wechat](https://docs.google.com/forms/d/e/1FAIpQLSe4KGT8Sh6sJ7hedQRuIYirOoZK_85miz3dw7vA1-YjodgJ-A/viewform?usp=sf_link)｜[Website wtf.academy](https://wtf.academy)
 
 Codes and tutorials are open source on GitHub: [github.com/AmazingAng/WTF-Solidity](https://github.com/AmazingAng/WTF-Solidity)
+
 ---
 
 ## `selector`

diff --git a/Languages/en/30_TryCatch_en/readme.md b/Languages/en/30_TryCatch_en/readme.md
@@ -9,7 +9,7 @@ tags:
 
 # Solidity Minimalist Tutorial: 30. Try Catch
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/31_ERC20_en/readme.md b/Languages/en/31_ERC20_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Quick Start: 31. ERC20
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/32_Faucet_en/readme.md b/Languages/en/32_Faucet_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Crash Course: 32. Token Faucet
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/33_Airdrop_en/readme.md b/Languages/en/33_Airdrop_en/readme.md
@@ -10,7 +10,7 @@ tags:
 
 # WTF Solidity Quick Start: 33. Sending Airdrops
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)
 

diff --git a/Languages/en/34_ERC721_en/readme.md b/Languages/en/34_ERC721_en/readme.md
@@ -11,7 +11,7 @@ tags:
 
 # WTF Solidity Beginner's Guide: 34. ERC721
 
-Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies. 
+Recently, I have been revisiting Solidity, consolidating the finer details, and writing "WTF Solidity" tutorials for newbies.
 
 Twitter: [@0xAA_Science](https://twitter.com/0xAA_Science) | [@WTFAcademy_](https://twitter.com/WTFAcademy_)