1. Reviewed and maintained WTF Solidity tutorial
2. Updated WTF Ethers tutorial to ethers.js v6
3. Hosted [ETH Beijing Hackathon](https://ethbeijing.xyz).
4. Created new tutorials, including WTF Gas Optimization, WTF CTF, WTF Cairo, and WTF JavaScript.
5. Built SoLive: A flexible online playground for Solidity smart contract, inspired by remix-IDE and react-live. And won the zkSync best developer tooling award on EHGlobal's Scaling Ethereum hackathon on 2023.