Answer: Sang
Lee was asking Sang where Juntao was, and Sang said, "Juntao is everywhere". When Lee pointed a gun at Sang, he said, "Shoot me", then Sang pushed a guy in front of Lee and escaped. Sang wore a black suit that night, but throughout the movie, he wore a police uniform and a white suit too. He was one of the main villains in the movie, and worked for Juntao.