Regular tree with oval red fruit and fine wood. According to legend, this tree first grew in the tomb of Confucius, tall and straight trunk, luxuriant leaves, seems to be a model for all trees. The model tree is green in spring, red as blood in summer, white in autumn and black in winter. Because of its pure color and purity, it is also a model for all trees. According to legend, this tree was first grown near the tomb of Duke Zhou. These two kinds of trees are called kai and mo respectively, and the tree is a metaphor for people, so people's exemplary behavior is called model.
the main statement of the text?
Kai and Mo are the names of two kinds of trees