When I cleaned the throttle valve, a thin tube was inserted.

Hello, if you can't take out the throttle body, you can only remove it into the air pipe. I suggest you go to the repair shop to disassemble it, because the intake pipe requires good sealing, otherwise it will easily lead to other failures. I hope my answer is helpful to you. If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.