1.打开Remix,创建一个空白模板，命名abc.sol

https://remix.ethereum.org/

2. 将以下代码粘贴至abc.sol，编译器选择0.8.7，右键点击 complie

pragma solidity ^0.8.0;

// import "hardhat/console.sol";

contract Comments {
  // Exposed data structure
  struct Comment {
    uint32 id;
    string topic;
    address creator_address;
    string message;
    uint256 created_at;
  }

  // Notify users that a comment was added
  event CommentAdded(Comment comment);

  uint32 private idCounter;
  mapping(string => Comment[]) private commentsByTopic;

  // Fetch a list of comments for a topic
  function getComments(string calldata topic) public view returns(Comment[] memory) {
    return commentsByTopic[topic];
  }

  // Persist a new comment
  function addComment(string calldata topic, string calldata message) public {
    Comment memory comment = Comment({
        id: idCounter,
        topic: topic,
        creator_address: msg.sender,
        message: message,
        created_at: block.timestamp
    });
    commentsByTopic[topic].push(comment);
    idCounter++;
    emit CommentAdded(comment);
  }

  // Delete comment
  function deleteComment(string calldata id) public {}
}

3.如下图所示进行合约部署，切换到condor链，连接Metamask, 单击deploy. 支付gas后复制生成的合约代码，下一步用到。

3. 打开replit , 点击fork

4. 找到 hooks>useCommentsContract.ts 文件，用刚刚生成的合约，替换第160行的合约，之后运行

5.复制url 去discord提交（提交时候，repl得处于运行状态，等拿到角色后可以关闭网页）