Tell me at which moment you experienced the cycle of cause and effect.

I remember that the fastest train back to my home was always crowded and there were never any seats. Once I went out, there were too many people, and I stood behind the car. It happened that I got off at the next stop in front of that man. After I sat down, I saw a pregnant woman with a big belly far away from me, standing in front of the old, weak, sick and disabled seat, and no one gave up her seat, which seemed very helpless. There are so many people, and they are very worried when they look at it. Because she was standing in the front of the car, and then I called her from a distance, and she pushed me to sit her down. People think we know each other. She kept thanking me. I said you're welcome. Then there was a miraculous scene! Originally, this train would have been crowded to the terminal, but it happened that I took this train. When I stopped at the next stop, the people on the train didn't know if they all went to the same destination or something, and they all got off at once. So I got in the seat, too?