An old man saw his neighbor's dead buttonwood and said to his neighbor, "Dead buttonwood is an ominous thing and should be cut down." The neighbor listened to the old man's words and cut down the buttonwood with an axe. Seeing the plane tree fall to the ground, the old man asked his neighbor for firewood. The neighbor was very unhappy and thought, "This old man is here to teach me how to cut down trees. Being a neighbor with such people is like living in a dangerous zone. What can I do? " So the neighbor left the old man.

In the fable, the old man got firewood, but lost the feelings of his neighbors.

Eagle is one of the longest-lived birds, and can live to 70 years old. However, what a difficult process it will be! At the age of 40, the eagle's claws began to age and it could not catch its prey effectively. The sharp beak becomes very long and curved, almost stabbing the chest; The huge wings become very heavy and it is difficult to fly. At this time, the eagle made a decisive choice. First, it swooped down from a height and hit the rock with its hard beak, making it break; Then, put out your claws and pull out your feathers with your beak. This period was very painful, but five months later, the newborn eagle spread its wings for nine days again and enjoyed the remaining 30 years of free flight.

Tao Yuanming abandoned his official post and lived in seclusion in the countryside, but he gained the leisure and tranquility of "picking chrysanthemums under the east fence and seeing Nanshan leisurely" and realized the meaning of nature and the true meaning of life. Li Bai lost a rare opportunity for promotion, but in the Great Depression and depression, he set up the lofty ambition of "one day, he will climb the wind and break the waves, and and set my cloudy sail straight and bridge the deep, deep sea", saving more strength and goals for the continued progress of life; Du Fu gave up the comfortable enjoyment of his official position, walked among the general public, experienced the sufferings of the people, listened to the complaints and difficulties of the people, and issued a deep desire to "consolidate a spacious building and protect the poor in the world from embarrassment", making the society warmer and full of hope.