What jokes did you hear on the train?

In 2008, a few days after the 5.12 Wenchuan earthquake, aftershocks continued. I took the train back to Xinxiang from Panzhihua. A mother and her son were in the same car. The child was about five or six years old and the mother was in her thirties. They were going to Beichuan to find the father of the child. The father had been out of contact for several days. Everyone was heartbroken after hearing this. The bus starting with K from Panzhihua to Chengdu takes more than ten hours. It was late at night, and I was leaning over the small table in front of the window in a trance... Maybe the child was impatient in the hard seat and started to make a fuss. The young mother comforted him and sang a song very softly, with a very soft voice. It was very gentle and beautiful, and the child fell asleep in her loving singing... - In the blink of an eye, ten years have passed, and I still ride between the north and the south of the motherland. Every time I go to or pass through Sichuan, I will think of that mother and son. , thinking of that young mother’s magical singing voice, I wonder how they are doing now!