David Chan from the Editing Team has written up a nice summary https://meta.wikimedia.org/wiki/User:DChan_(WMF)/Forms_of_writing_used_in_Chinese_editions_of_Wikipedia of what's going on in the Chinese Wikipedias, discussing the languages, writing systems, and tools used to deal with them in the eight Wikipedias people might refer to as "Chinese" (seven modern languages plus Classical Chinese).

Good stuff! —Trey

Trey Jones Sr. Computational Linguist, Search Platform Wikimedia Foundation UTC-4 / EDT