That’s a Chinese saying for “lot of people:” 人山人海. I never appreciated the saying until I came to China. Now I know why they have that saying. There are a lot of people in China.
Here’s a subway junction in Shenyang, on a Sunday afternoon, where the two subway lines meet. The people just keep coming.
People mountain, people sea.
Wow! And every one an individual with unique feelings, fears, identities, histories. Wow! Just like if there were only two. Wow!
Just like the clown car at the circus.