Located on the 27th floor of an office/apartment complex, Warzone is an aptly named Brazilian Jiujitsu gym that also teaches boxing, self-defense, wrestling, Aikido, and kickboxing. The gym is run by Saulo, a down-to-earth Brazillian fighter, who competes regularly and has over 10 years of BJJ experience under his (brown) belt. Supporting him are four other instructors that cover the various other disciplines. Memberships start at 1000rmb for men and 600rmb for women per month. With that you get unlimited classes -- it's a steal.