Codename RENHAI is very unflattering, more likely it intends to be ”人海” rather than "仁海", which means "human wave".
Luda, luhu, luhai, luzhou, luyang are all fine, but RENHAI made it unnecessarily emotional.
Typically when China is accused of "human wave”, there is a certain mentality you can assume of the accusers.
I've seen somewhere that translates it as 'blade' 'sea' (刃海) but still the name makes absolutely no sense to me. I still do not understand why wouldn't they just settle with whatever the PLAN calls it...