disembarking from Beijing city bus?

I think you may mean the local public buses, right?
If so, the buses will stop at each bus for passengers to get off the bus, so please do not worry about it. The bus will remind you the stations in order to prepare to get off the bus.

yes. local public bus. so we dont have to tap a card or something, right? we just pay 1 or 2 Yuan when we get in the bus, take the ticket and finally get off from the bus. how about if no passenger get off and get in? the bus will stop too, or just skip the bus station?