In order to shut Fung's mouth up, KIM intents to arrange FUNG to be his son-in-law in marrying SIN. In regards to his dangerous situation and reluctance to be buy over by KIM, he refuses the marriage. SIN understands FUNG's situation and feels very embarrassed.
When SIN has known that his father is in league with the Japanese, she persuades him with good intention but is of no use. She is being shut up by KIM instead.