1. Hummingbird training in the same city needs to join the group by scanning the code on WeChat or adding friends as administrators.

2. Code scanning method: You need to pay attention to Hummingbird's crowdsourcing official WeChat account first, and then find the "Join Group" or "Group Chat" button in the official WeChat account. After clicking, a QR code will appear. Scan the QR code to enter the corresponding hummingbird city training group chat.