Tell some jokes!

There is a girl named Liu Yun in our class. Once, a classmate from another class sent her a letter. There is a horizontal line below the word "Yun" and above the word "Yun" on the envelope, which has become a dot because it is too scribbled. As a result, that classmate cried in our corridor with a letter; Liu Mang, who's Liu Mang? There is a letter for you.

. All the people in the corridor ran out to see the hooligans in Liu Mang. As a result, that classmate was helplessly called rogue O(∩_∩)O haha ~