How do I delete my WeChat history?
To delete all chat messages with a single person, you can click the person icon at the top right of your chat box, and click 「Clear Chat History」 to delete them.
To delete a single chat message, you can long press the message on your chat box, select 「More...」 and click the trash icon below to delete it.
To remove all chat history with everyone including those of drift bottle, then goto 「Me」->「Settings」->「General」->「Clear Chat History」.
For the consideration of privacy, WeChat does not store your chat history if you don’t authorize it to backup it. Your chat history cannot be recovered once deleted.