What do you mean by slapping Zhao Si half-heartedly?

It is a rather "damaging" joke to slap Zhao Si's mouth in half, which is similar to "kicking the lame in the leg", that is, by destroying the good places of others, the situation of people who already have some problems becomes worse. This sentence comes from a user's screen name when Zhao Si was broadcast live, and this user also extended the related screen names such as "suddenly deleting Zhao Si's good mouth".