When he was four years old, Xu Wanghuan said to his sister, "Sister, I'll give this to you."
When he was five years old, Xu Wanghuan said, "Sister, you think this is delicious. Do you want to try it?"
When he was six years old, Xu Wanghuan said, "Sister, do you like this doll? My brother will give it to you."
When he was fifteen years old, Xu Wanghuan said, "Sister, I'm leaving, will you miss me???"
"Brother, be careful."
"You are so stupid. Why did you rush out?"
"Brother is so stupid. Why didn't you look at the road? What if I bumped into you?"
"Brother, let me protect you this time, okay?"