Tik Tok's live broadcast of stealing the tower and guarding the tower probably means that when the PK of both parties is about to end (usually within 5 seconds), the backward party quickly sends out several gifts to surpass the other party, and fails because the other fans have no time to make up the gifts. This is called stealing the tower. And guarding the tower is that fans brush more gifts to open the gap between the two sides and prevent the other party from stealing the tower pk to win.