What does it mean to send zc 12?

The significance of wechat verification.

You need to send this verification message with your mobile phone number to unbind WeChat.

To send, which means to send, belongs to the vernacular vocabulary of modern Chinese. In ancient times, this word was relatively rare and belonged to a frequently used Chinese vocabulary. It is more common in general occasions. Send and transport as soon as possible. It's a way to get things from here to there. Simultaneous transmission is also one of the communication terms. Also refers to a radio transmitter that transmits radio signals.