Why is wechat on the s list?

The reason why WeChat is on the S list may be: 1. When you delete each other, you just meet each other and send you a message. At this time, the other person will be displayed in your chat record, and there will be a prompt to add the other person as a friend. 2. There may be something wrong with your mobile phone cache. At this time, it is necessary to brush off the phone cache or restart the phone. 3. Wechat has deleted its own function, but it hasn't deleted the function of letting the other party delete its own micro-signal, so I deleted the other party, and I am still a friend of the other party, so I am still a friend of the other party, and I don't need to add or be a micro-friend.