Fiona in HKG writes: Tickets being sold on the buses by the ticket-seller seated just inside the entrance.
He sat on a stool at a little desk where he issued the tickets and if necessary gave change. After buying the ticket you went through a little gate to the main part of the bus. There were also a few seats at the front of the bus near the conductor where you could sit either after or before buying your ticket.
There was a middle-aged English woman seated, like me, at the front of the bus. At her stop she got up quickly and went to the front door. The conductor gestured to stop her. She said contemptuously in English, "I paid you! Don't you remember?" He shrugged, and she got off. Poor woman, she did that to save a bus fare, thirty cents.