diff --git a/hardhat-tutorial/contracts/Exchange.sol b/hardhat-tutorial/contracts/Exchange.sol
index f23840d..ecdf8ca 100644
--- a/hardhat-tutorial/contracts/Exchange.sol
+++ b/hardhat-tutorial/contracts/Exchange.sol
@@ -83,7 +83,7 @@ contract Exchange is ERC20 {
         uint256 cryptoDevTokenAmount = (getReserve() * _amount) / _totalSupply;
         // /从用户的钱包中烧掉LP token，因为它们已经被发送到删除流动性
         _burn(msg.sender, _amount);
-        // 将'ethAmount'的eth从合同转移到用户的钱包
+        // todo 将'ethAmount'的eth从合同转移到用户的钱包   这里为什么用payable
         payable(msg.sender).transfer(ethAmount);
         // 将“cryptoDevTokenAmount”数量的Crypto Dev token从合同转移到用户的钱包
         ERC20(cryptoDevTokenAddress).transfer(msg.sender, cryptoDevTokenAmount);
diff --git a/.eslintrc.json b/my-app/my-app/.eslintrc.json
similarity index 100%
rename from .eslintrc.json
rename to my-app/my-app/.eslintrc.json
diff --git a/.gitignore b/my-app/my-app/.gitignore
similarity index 100%
rename from .gitignore
rename to my-app/my-app/.gitignore
diff --git a/my-app/my-app/README.md b/my-app/my-app/README.md
new file mode 100644
index 0000000..b96b748
--- /dev/null
+++ b/my-app/my-app/README.md
@@ -0,0 +1,15 @@
+### 建造一个类似于Uniswap的去中心化交易所😀  
+
+这个repo里包含了Uniswap的原理图，我整合了知乎上的一篇文章（链接在导图里面有）和LW3的教程，做了总结性的思维导图 :wink:
+
+总体而言，这个项目和之前的项目不同点在于 
+
+- 它封装了调用合约函数的方法，将这些方法放在utils文件夹里面
+- 结合了Uniswap的原理，多了一些基础的数学计算，这些我也制作了手绘图~
+
+话不多说 上图:tanabata_tree:
+
+
+
+
+
diff --git a/address.txt b/my-app/my-app/address.txt
similarity index 100%
rename from address.txt
rename to my-app/my-app/address.txt
diff --git a/constants/index.js b/my-app/my-app/constants/index.js
similarity index 100%
rename from constants/index.js
rename to my-app/my-app/constants/index.js
diff --git a/next.config.js b/my-app/my-app/next.config.js
similarity index 100%
rename from next.config.js
rename to my-app/my-app/next.config.js
diff --git a/package-lock.json b/my-app/my-app/package-lock.json
similarity index 100%
rename from package-lock.json
rename to my-app/my-app/package-lock.json
diff --git a/package.json b/my-app/my-app/package.json
similarity index 100%
rename from package.json
rename to my-app/my-app/package.json
diff --git a/pages/_app.js b/my-app/my-app/pages/_app.js
similarity index 100%
rename from pages/_app.js
rename to my-app/my-app/pages/_app.js
diff --git a/pages/api/hello.js b/my-app/my-app/pages/api/hello.js
similarity index 100%
rename from pages/api/hello.js
rename to my-app/my-app/pages/api/hello.js
diff --git a/pages/index.js b/my-app/my-app/pages/index.js
similarity index 100%
rename from pages/index.js
rename to my-app/my-app/pages/index.js
diff --git a/public/cryptodev.svg b/my-app/my-app/public/cryptodev.svg
similarity index 100%
rename from public/cryptodev.svg
rename to my-app/my-app/public/cryptodev.svg
diff --git a/public/favicon.ico b/my-app/my-app/public/favicon.ico
similarity index 100%
rename from public/favicon.ico
rename to my-app/my-app/public/favicon.ico
diff --git a/public/vercel.svg b/my-app/my-app/public/vercel.svg
similarity index 100%
rename from public/vercel.svg
rename to my-app/my-app/public/vercel.svg
diff --git a/styles/Home.module.css b/my-app/my-app/styles/Home.module.css
similarity index 100%
rename from styles/Home.module.css
rename to my-app/my-app/styles/Home.module.css
diff --git a/styles/globals.css b/my-app/my-app/styles/globals.css
similarity index 100%
rename from styles/globals.css
rename to my-app/my-app/styles/globals.css
diff --git a/utils/addLiquidity.js b/my-app/my-app/utils/addLiquidity.js
similarity index 100%
rename from utils/addLiquidity.js
rename to my-app/my-app/utils/addLiquidity.js
diff --git a/utils/getAmounts.js b/my-app/my-app/utils/getAmounts.js
similarity index 100%
rename from utils/getAmounts.js
rename to my-app/my-app/utils/getAmounts.js
diff --git a/utils/removeLiquidity.js b/my-app/my-app/utils/removeLiquidity.js
similarity index 96%
rename from utils/removeLiquidity.js
rename to my-app/my-app/utils/removeLiquidity.js
index 6207b6e..d60f2bf 100644
--- a/utils/removeLiquidity.js
+++ b/my-app/my-app/utils/removeLiquidity.js
@@ -34,6 +34,7 @@ export const getTokensAfterRemove = async (
     );
     // 得到CD LP Token的总数
     const _totalSupply = await exchangeContract.totalSupply();
+    //用户remove LP Token后，返回给用户的Eth数量
     // 这里我们使用的是乘法和除法的BigNumber方法
     const _removeEther = _ethBalance.mul(removeLPTokensWei).div(_totalSupply);
     const _removeCD = cryptoDevTokenReserve
@@ -43,7 +44,6 @@ export const getTokensAfterRemove = async (
       _removeEther,
       _removeCD,
     };
-    //用户remove LP Token后，返回给用户的Eth数量
   } catch (err) {
     console.error(err);
   }
diff --git a/utils/swap.js b/my-app/my-app/utils/swap.js
similarity index 100%
rename from utils/swap.js
rename to my-app/my-app/utils/swap.js