How crowded in Beijing? 20+ million people and the busiest subway! | 2000 多万人口的北京到底有多拥挤，最拥挤的地铁站实录。

Xierqi is the station to Beijing software park where there are so many high-tech enterprises.
People come from all over the city to the park to work in the morning, making the subway station (Xierqi) super busy.
Are there other stations you think busier than this?