When Jiang Lin was sixteen, his father found a stepmother for him and brought him a younger sister, Yu You, who looked very well-behaved.
Jiang Lin didn't like her at first. He mocked her openly and secretly, but the little girl gritted her teeth and refused to care about him.
Jiang Lin: How dare you be my sister? Cut
Later, Jiang Lin's father and stepmother went out to travel around the world. Yu You smiled and blocked Jiang Lin in the men's room and beat him up.
Yu You (pulling his hair): Do you dare to do it next time?
Jiang Lin: I don't dare anymore. I don't dare anymore…
Later, Jiang Lin: My sister is great! Mine! Jiang Lin's good brother and Yu You: Bitch!