Let&;s have fun. I remember that when Happiness was in the third grade of primary school, she dared to tamper with a limerick written by the ancient Xie Xueshi. After writing, read aloud in front of the whole class, which caused the whole class to burst into laughter. It&;s written like this. Spring rain is as expensive as oil, rubbing mud balls with mud. A slingshot roar, broken head. Sixty years have passed, and I still remember it with relish. Unforgettable.