How does WeChat end the chat with elders?

You need to talk to your elders about this. Take "WeChat version 8.0.28" as an example.

1. Open WeChat and open the dialog box for chatting with elders, as shown in the figure below:

2. Edit messages to elders, such as: address each other, sorry, I have something to do temporarily here (this means that you don't want to chat with elders, but you really have other things to do and have to do). Let's talk about it next time, as shown in the figure:

3. When you edit such a passage, the elders will understand you and naturally end the chat, as shown in the figure below:

You ask this question, mainly to tell your elders what happened, and then end the chat politely.