Friends chat on WeChat, I doubt whether the system can detect it, and I feel that the content of WeChat chat is always there. I feel that chatting will be monitored at any time. If you think it's appropriate, you can stop playing WeChat. Anyway, this backstage of WeChat can know. How else can I upload it to you? The other party knows, right? But this privacy is not disclosed to you by the official WeChat. Besides, are you a state secret employee? You are afraid of being leaked. Ordinary people, the one talking and chatting.