What do you mean by "no powder return"?

It is to send a message to test whether you are still on the other party's friend list, so that those who can receive the message will not reply. Messages that are no longer friends of the other party need to be verified, so that you can know that you have been deleted by the other party, and you can also delete the other party from the friend list to avoid accidental deletion.

Wechat.

Chat: It supports sending voice messages, videos, pictures (including facial expressions) and texts. Is a kind of chat software, which supports multi-group chat (group chat of up to 40 people, 100 people and 200 people is being tested).

Add friends: wechat supports finding micro signals (specific steps: click on friends at the bottom of wechat interface-> add friends-> search number, then enter the number of wechat to be searched, and then click find), check QQ friends to add friends, check the phone address book to share micro signals to add friends, shake to add friends, add friends by QR code search, and accept friends by drift bottle.

Real-time intercom function: users can talk to a group of people through a voice chat room, but unlike voice sending in a group, the messages in this chat room are almost real-time, without leaving any records, and they can still chat in real time when the screen of the mobile phone is closed.

Wechat payment.