What should I say to my colleague sitting opposite? Don't take off your shoes casually.

What should I tell my colleague sitting opposite? Don't wear slippers casually. In fact, it is not particularly easy to say this, sometimes it is. Direct words are also a way. We can tell Fang directly, and then ask him not to drop out of school casually, because it's really strong and uncomfortable, but in this case, it depends on the other person's personality. If some people do this, you may not really do it, but some people may do it in Bengali after you remind them.