Which is better, the US or China? This is the Second Avenue Subway in New York City. It took roughly 13 years to build, with about 3 kilometers of track and three stations. Let’s use it as our benchmark. It took 13 years to finish this, alright? China built a complete network of underground tunnels and railways totaling around 25,000 kilometers within 12 years.

Here is the video URL：

https://www.tiktok.com/t/ZTUWXG5Jo/