Snopes has an article on it, and even they couldn’t come up with a solid number.

https://www.snopes.com/fact-check/china-apartment-building-residents/

Reddit OP has made several versions of the same map as part of an alternate history project. The one I shared is the most recent update; I couldn’t track down the exact version from the tweet.

Map Source, higher res: https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fd3giaas4jnq91.png

They actually did that with birds!

https://americanornithology.org/american-ornithological-society-will-change-the-english-names-of-bird-species-named-after-people/