Vincent Wong
Besides his own marriage Tung Po is also concerned with his youngest sister So Siu Mui's (Jacqueline Wong) love life since he believes her flirtatious boyfriend Chun Siu Yau (Vincent Wong) will eventually leave her and break her heart. Also his other younger sister So Dai Mui (Harriet Yeung), who still has not gotten over her first love that is now married to someone else.