Answer: In order to sell mud ponds, frogs listened to the opinions of many small animals. Grass, trees and flowers are planted on the ground around the pond, and spring water is introduced into the pond. He also built a house by the pond and a road leading to the city.

? Because I feel that this place is no longer the previous mud pond, the mud pond has become a better place than the city. There is no fresh air, no crystal clear spring water, no sunshine like a mud pond, no spacious roads, no quiet mud pond, no … It suddenly occurred to him that all his ancestors lived in this mud pond and lived happily. So he thinks it's not bad to live alone in such a nice place. Why did he sell it? Finally, the frog decided not to sell the mud pond.