Kai trees, oval fruits, red, delicate wood. According to legend, this tree was first grown next to the tomb of Confucius, with tall and straight trunks and leafy branches. It seems to be an example of many trees. Mould trees, green in spring, and red in blood in summer, It turns white in autumn and black in winter. Because of its pure color, "unstained by dust" is also an example of trees. According to legend, this tree first grew next to Zhou Gong's tomb. These two trees are called "kai" and " 1. "Model" is a metaphor for people, so people's exemplary behavior is called "model". The text is intended to explain:. ['"kai" and "mo" are the names of two trees.', 'The word "model" has the word "wood".', '"Model" originally referred to two trees.', 'Kai trees, mold trees have aura.']