His father had created a successful gold retail business, and it was Kwok’s intentions to learn the business before eventually taking over his father’s company. However, one of his brothers decided to take over instead, allowing him to pursue a professional music career. It’s said that, without his brother’s intervention, Kwok’s father would not have allowed him to pursue music. Aside from music, Kwok is also known for his dancing and acting efforts. He’s appeared in various commercials and TV shows throughout his career. In his personal life, he’s known for his love of cars, having purchased and raced numerous vehicles throughout his lifetime.