Chinese Netizens are very familiar with Xi Jinping's national ID number precisely for this reason :-) ID verification is enforced on all Chinese websites. People figured out they can just use Xi's ID number.
> ID verification is enforced on all Chinese websites. Is that really true? So search engines? News sites? Pseudo-anonymous discussion forums?
No, you don't need ID verification to use search engine or read news in China.
However, sites that depend on user-generated content (like forums) would ask for at least your phone number.