However, the Chinese University of Hong Kong (CUHK) was apparently the main focus of the police, and became a literal battleground.

Why?

As The Epoch Times' Tang Jingyuan points out, the answer may be simpler (and more ominous) than many suspect. Many CUHK students suspect that the real goal of the police is to control the internet, as Hong Kong's internet center which handles 99 percent of the city's internet traffic is located inside the CUHK campus.