Once a traveling party series, the organizers of Sao (Chinese slang for slutty) have settled into Haus, a new nightclub in a North Jing’an basement. The space is roomy and visually stimulating, with a complex laser light system that ripples across the smoky dance floor and a giant rainbow logo from Absolut across the bar. With a music policy of kpop and mainstream electronic music, there are occasional drag queen performances and a few recurring special events, including a fetish night.