Once upon a time, there was a duckling who was often bullied by other ducklings because of his small size and weak constitution. The duckling envies his strong partner and always wants to have a strong body. One day, the duckling was walking by the river and saw a fat, big and strong pig lying under the big tree. The duckling thinks: How did the pig become so strong? The duckling patted the pig on the body. "Uncle Pig, Uncle Pig" slowly threw his head back and just snorted and lay down and fell asleep. The duckling patted again, but the pig snorted and fell asleep. The duckling has no choice but to walk away. Turning around, he found a big bag of open feed next to Uncle Pig. The duckling thought: Uncle Pig must have eaten this feed to become so strong, so he went forward and ate it. Sure enough, in a short time, the duckling became very strong, so he was very happy and swaggered to the other ducklings. The other ducklings are afraid to see this strong duckling and come forward to please it. The duckling feels very powerful and happy. At this time, the duckling felt thirsty, so he swaggered to the river to drink water. Suddenly, many bubbles appeared in the duckling's mouth, and there were more and more large and small bubbles. Finally, the duckling changed back to its original appearance like a deflated ball, and Uncle Pig and other ducklings laughed. Uncle pig said, "Little duck, what you eat is not pig feed, but my diet feed." However, duckling, be careful in the future and don't take other people's food casually. "