So you can't add it. Some people send Yan characters that are unique, so many people like to add them. At this time, they have to pay a certain fee. Unlike other characters, you can add applications directly, and you must become a member. . The operation method is simple. Enter the enterprise WeChat chat interface, open the expression favorites → click "+"→ select "My Expression", the picture in the mobile phone will be uploaded as the expression of enterprise WeChat, and the added expression will appear in the expression favorites of enterprise WeChat.