Tall trees.
"Poetry Nan Zhou Han Guang": "There are trees in the south, so don't worry." Zhang Tang Joe's poem "On Friends' Houses" wrote: "Qiao Mu sings summer and rainy days with cool cicadas." Guo Moruo's Peony and Other Shadows: "I am afraid that the mountain I planted with my own hands has grown into a tree."
Mencius Hui Liang Wang Xia: "The so-called motherland, not Screaming Trees, is called the minister of the world." Zhao Qi's note: "The so-called old country is not only the height of the tree, but also the old country. When a minister of Xiu De lives in the past, he can often help his monarch and Tao. " Later, because "arbor" was used as the standard to describe the old country or hometown.
The poem "Selected Works of Yan Yanzhi": "There are many trees in the old country, and the empty city condenses Leng Yun." Shan Li's note: "Lun Heng said:' Look at the trees and know the old capital.' "Gao Ming Panlong's Sixty Prefaces to Yang Mingxiong": "At the gate of a tree, it is not easy for a hundred generations to have a surname." In the Qing Dynasty, Cao Yin's poem "Thoughts on Reading Ge Zhuang's Poems": "Who is the old and new genealogy, the bureau will be updated forever."
Woody plants, with tall plants and obvious differences between trunks and branches. Such as pine, cypress, poplar and birch.