Meeting each other is both a blessing and a pity. Breaking up is the norm in the world.
Jiang Jun: Liu Xiangming, please teach me how to play basketball. I am very interested in basketball!
Liu Xiangming: Do you know the math problems? Still learning to play basketball?
Jiang Yun: Oh, you are here, you teach me how to do math problems.
Liu Xiangming: Hey, trouble, I'll teach you when I have time.
Jiang Jun: What to teach? Math problem?
Liu Xiangming: Stupid, it's math problems and basketball.
Intention: I am glad to have met but regret that the ending was not satisfactory.