I got on the bus no. 7730 in my village and got off at the bus terminal. Luckily there was a big bus depot for several bus lines. And the large building with high ceiling was comparted for repairing buses of each lines(I just guessed). I sketched several and washed them on the drum. Of course engineers came to see asking why and what for. Thankfully one guy brought a cup of coffee. I loved them, arduous and sincere workers.