Piggy's face is always dirty. On Little Pig's birthday, his friend Xiaotu gave him a mirror and asked him to take a picture before going out every day, "In this way you can know where there is dirt on your face, and you can wipe it off." Early the next morning, in order not to let the mirror look dirty, the little pig washed his face very clean. But when he was about to look in the mirror, a fly flew over, like dropping a bomb, and dropped a little fly droppings on the mirror.In this way, the piggy in the mirror becomes a dirty piggy. The little pig quickly took a towel to wipe his face.Wipe it once, look in the mirror once...why can't it be wiped off?

"Little pig!" The little rabbit came and asked the little pig to play. The little pig said, "Wait a minute, I can't go out without wiping my face clean." "Yes." Xiaotu was waiting outside the door.But after waiting for a long time, I still haven't seen the piglet produce rice. The little rabbit went in and took a look, and then figured out what was going on. "Little pig, you made a mistake." The little rabbit showed the fly droppings on the mirror to the little pig. "The mirror is dirty. Your face has been wiped very clean." From then on, whenever Little Pig looked in the mirror and saw that his face in the mirror was dirty, he thought, "This is because the mirror is dirty. My face is actually very clean."

So, although the little pig looks in the mirror every day, he is still a dirty little pig.