The first time he helped her, Si Muwan said, "Thank you, senior brother, I'll treat you to dinner if I have the opportunity."
The second time he helped her, Si Muwan said: "Thank you, senior brother, I will treat you to dinner when you have time."
The third time, the fourth time...
The Nth time he helped her, Si Muwan opened his mouth: "Let's go home and cook for you."