What does the expression pack mean?

Rubbing the belly expression pack means that you have a good impression on each other and want to chat with each other. The belly rubbing expression pack refers to the small size of the smart machine. Because the small homonym is similar to a small belly, it is used by netizens to imply that they have a small belly, and it also means that they are close to each other and have a good impression. The average girlfriend sends it to her boyfriend to show that I miss you. Therefore, rubbing your belly expression pack shows that you have a good impression on each other and want to chat with each other.