Three years old. Brother Jianyan, let me give you some sweets.
Five years old, brother Jian Yan, this toy is for you to play with.
Ten years old. Brother Jian Yan, can you help me take down the balloons from the tree?
Twelve years old. In short, I have something to do after school today, so you don't have to wait for me.
Fifteen years old. To put it simply, I was eating at Melos and forgot my wallet. Come help me pay the bill.
Yes, Jian Yan and I are what you call childhood sweethearts, and what is also true is that I like him.