Fred Cheng (鄭俊弘) is shooting the MV of the theme song (選擇善良) for Big White Duel (白色強人) drama lately. The location shooting takes place at a church in the daytime and back alley in Sham Shui Po at night, as the director wants to produce different types of feelings at different times. Fred said: “I believe everyone is kind-hearted and has angel and devil in our heart. Perhaps we might fail to resist temptations at times and it is a struggle to choose between black and white areas.”

Fred added everyone perspired quickly because the weather was humid and there was no ventilation in the church. He felt fortunate when the staff prepared many mini fans.