What kind of bug is this? Rental housing has appeared many times. Ask experts to help prevent it!

Cockroaches are the legendary "invincible cockroaches". You can buy some cockroaches or insecticide spray outside. It's best to wait until you can be away from home most of the day, and the doors and windows are closed most of the time, which is easy to be eliminated in one fell swoop. If you are as afraid of cockroaches as I am, I suggest you buy some cockroach houses and trap them so that you can't see their bodies.