In order to dress up, the ancients planted Sang Ma at home. "Mencius" Day: "The house is five acres, the trees can be mulberry, and fifty people can be clothed." Therefore, the word "Sang Ma" is specially used to refer to farming. In the poem "Crossing the Village for the Aged" written by Meng Haoran, a poet in the Tang Dynasty, there is a sentence "We open your window across the garden and say Sang Ma with a cup in our hand". In ancient times, mulberry and catalpa were often planted next to people's homes. In The Book of Songs Xiaoya, there is a saying that "only the mulberry must be respected", which means that the mulberry can easily arouse the memory of parents. Later, "Mulberry" was used as a synonym for "hometown".

Confucius and Mencius Sang Zi-Zoucheng, "Sang Zi" means hometown. In ancient times, mulberry trees and catalpa trees were often planted next to their houses. He also said that the mulberry and catalpa trees in his hometown were planted by his parents, and we should pay tribute to them. There are two ancient trees on the east side of Mengmiao Cliff Temple, which are said to have been planted by Meng Mu in those days. Meng Mu is a great woman in the history of China who is knowledgeable and good at educating children. Mencius was very filial and respected his mother. In the process of traveling around the world, no matter where he is, he always thinks of mulberry trees and catalpa trees in his hometown and his mother. Later generations used "mulberry" as a metaphor for hometown.

Wei Sang and Zi Shu must be respectful. -"Poetry, Xiaoya and Xiaoya"

Hometown of mulberry trees, hometown of parents.