I really don't know but I'd assume you'd need some sort of quasi-military team structure (ie. Team leader, rifleman, gunner, DMR, sniper, etc.). Identical uniforms (maybe not but then people will know you're on the same team when you roll in together wearing the same thing), probably some sort of name tape patch that says "TEAM CHINESE" to put above your name tape.
Really though you're kind of already a "team" in a sense since you play together and hopefully people know that you guys roll together.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE