Cangse Sanren 藏色散人: Leisuring Rogue of Hidden Colors
in fanfic, you would treat these like "Hanguang Jun," no addition honorifics needed, and you can't shorten them into nicknames
women DID, but they were so rarely recorded that authors hardly ever bother to give any to their female characters
writtenchinese.com/the-6-etiquett…
i once read a book by a white dude who introduced a character as "Mei Tzu, daughter of Sun Tzu" UGH. NO.
bc it's not a set rule. it depends on the parents' preference. and it's not a rule that family names are a single character either, some have two (Zhuge)
that's not..a STRICT rule. it's just that calling someone by only one syllable sounds weird to the Chinese ear. go with Zhanzhan, LOL