C37

"Qingyu, Qinglin, these two kids saw that you didn't come back, so they went to find you, Uncle Sanpao. Uncle Sanpao heard from Qingyu that you left with Da Fu, so he went to Da Fu, and only then did Da Fu tell you that Uncle Sanpao said that you went to the county city by car.

The two of them thought that you must have come back by the night train. It was so late