Reactor is a huge dance club in C-Park, the Changning development that is quickly becoming "the underground INS." The space is a big, minimal, dark, and windowless concrete space with red lights and two big dancefloors, plus another room which is the size of a lil club. Expect music programming that leans underground, including house, techno, bass, live performances, big lineups on weekends, and shows by touring acts. The soundsystem on the second floor is bringing heavy pressure and the huangniu highball is nice. Expect a cover price and a "no flash photos on the dancefloor" policy.