Gao Yang and Hui Xiong followed Xiao Liu into Baixing Alley.

The alley was cramped, with chaotic signs overhead and dazzling neon lights. Underfoot lay various trash and dirty puddles, while the air was filled with a cheap, pungent fragrance.

Women dressed in sexy, heavily made-up outfits stood outside their shops smoking, watching Gao Yang and his group pass by with lazy and numb expressions.

Soon, Xiao Liu led them to a massage parlor at the end of the alley called "Authentic Thai Massage," where police tape was stretched across the entrance, guarded by a policeman.