Wechat fuel symbol doesn't like it.

Sorry emoji can use the emoji that comes with WeChat system, such as making a fist or shaking hands.

Nowadays, smart phones are particularly rich in words. You can also open the search when sending a message. No matter what message you send, there will be corresponding words and a lot of sorry words. If you don't want to search, you can apologize directly with the symbol of making a fist or shaking hands.