Liu Hua's story is probably only about "being kind to others". Liu Hua, a doctor in the Tang Dynasty, was a man of integrity and was well-known in both the government and the public. On the way to Luzhou, an official's son came through Yuzhou. The young man brought his own exercises and respectfully asked Dr. Liu after graduation. Dr. Liu read it carefully and applauded again and again. I hope the young man will make persistent efforts and bring his works at any time. The young man went back happily.

Dr. Liu's son happened to be nearby. He asked his father quietly, "What that child wrote is just nonsense. How can you praise him? " Dr. Liu said: "Many changes have taken place in Bashu area in recent years. Local tyrants have risen. Officials are not like officials, and people are not like people. It is not easy for this young man to concentrate on writing and be kind. Only by following him and letting him stick to it will there be one more serious person and one less grass thief in this world. "