HI,
1. We have a HK sq in Leviathan Fleet(kaiser server), around 15+ Hk ppl.
2. CV/SS/BB depend on your playing style. All is good and fun. easy to up lv
BB> CV> SS
3. Seems there is no chinese version, but in game the main problem is chatting, the game data is easy to understand.
4. More info, nation , ship class. and aa is easiler to get more credits and expters.
or you can roll some +12 sailor and lv up them to 12lv then sell to other ppl
Sorry in campany cannot type chinese, hope this help you and enjoy the game :D
Zx.