Fable Story: The Art of Changing Hearts Says that during the Spring and Autumn Warring States period in China, Zhang San of the State of Lu and Li Si of the State of Qi, both of whom simultaneously found bian Que, the most powerful doctor at that time, to see the doctor. Bian Que said, "I have."

Fable: The Art of Changing Hearts

It is said that during the Spring and Autumn Warring States period on the mainland, Zhang San of the State of Lu and Li Si of the State of Qi simultaneously found bian Que, the most powerful doctor at that time, to see the doctor. Bian Que said, "I have a way to cure both of your diseases at the same time." The two were overjoyed and asked for details. Bian Que said: "Zhang San's heart is so strong, but his temperament is weak, so he thinks more and makes less decisions. Li Si's heart is weak, but his temperament is strong, so he thinks less and is too arbitrary. If you exchange your two hearts with each other, that's perfect. So the two drank anesthetics, Bian Que cut open the chest cavity of the two people, took out the heart, exchanged positions, and applied a special medicine in the chest cavity, and three days later the two woke up, just like before the operation. Bian Que returned home, but Zhang San returned to Li Si's house, saying that this was his home, and Li Si also returned to Zhang San's house, saying that this was his home. The wives and children of the two families were in a fight, and they found Bian Que and asked him to explain the reason, and Bian Que said the reason for the matter, and the two families no longer quarreled.

What does this story tell us?

(Fable from Liezi)