This repository is for 以太坊公开课：开发者区块链入门，从基础到实战 from TinTinLand.
Task 2: https://wj.qq.com/s2/15328895/mr9v/
Task 3: https://wj.qq.com/s2/15368767/0g3d/
Task 4: https://wj.qq.com/s2/15392140/vh0q/
Demo: https://www.notion.so/Bounty-08372a293256408c97db6a195c860757