How are the expressions in the expression library of sogou input method sent as links?

Sogou can't display the picture directly. You use sogou's super SMS function. If you are texting and want to add pictures, you must use MMS. MMS is charged separately. Sogou sent it as a link. Within the validity period of 12 hours, you can access it with your password, and you don't have to spend money on MMS.

If you send a picture in QQ, use the add function on the left side of the input box, which belongs to QQ and can directly display the picture.