The story of the old farmer leading a donkey into the city.

Lao Wang was resting under a tree, and Lao Li came up to him and said, "Hey, why don't you go up the mountain to cut wood?" Lao Wang said, "What for?" Lao Li said, "It's easy to sell money. Selling donkeys can buy donkeys and then sell firewood from door to door. Buy a truck when you earn money, and then buy a timber factory to sell timber.