每日大作战

I still remember the scene I saw at the metro station that day, with people rushing to the station after work, packed like sardines. It reminded me of a video shared by @fanfanerlove, which showed the shocking congestion on Shanghai's metro. Why is it like this? In fact, as one of China's most prosperous cities, Shanghai has an extremely high population density and immense traffic pressure. The metro is the primary mode of transportation for citizens, especially during rush hour, when the stations are packed with people.