There are Bjj, No gi Bjj and MMA here:
www.hkbjj.com
www.pyramidwellness.com.hk
All classes are in the same place.
There is a Black belt seminar with Gracie Barra member- kazeka Muniz this weekend - sat 11th and sun 12th, check it out if you can. Its the first Bjj Black belt outside of Asia to visit HK.
bjj@hkbjj.com