Nicholas Tse and Andy Tien worked together on AS THE LIGHT GOES OUT (GAU FOR YING HUNG).
According to HK Top Ten, the film is about Hong Kong firefighters.
Nicholas and Andy had many scenes together.
Nicholas said, "In one scene, Andy had to yell at me as a superior. After an argument I shoved him off a building.
"We are both professional actors, we won't have any awkwardness."