During the Three Kingdoms period, Dong Feng was skilled in medical skills and noble in medical ethics. He treated people without gratitude or courtesy, and only asked the cured person to plant apricot trees in front of his house as a souvenir. Five strains were recovered from severe diseases, and one was mild. A few years later, it became a forest and was full of red apricots. He built a "straw barn" and told people that those who want apricots don't have to pay, as long as they exchange a millet for an apricot. In this way, the millet exchanged for apricot fruit piled up in Man Cang, and he used it to help the poor. People are very grateful to him, and they sent him plaques with the words "Xinglin", "Medical Forest", "Famous for Xinglin" and "Xinglin is warm in spring". These words of praise have become the elegant names of noble medical ethics and brilliant medical skills.