Why do pine and cypress symbolize death?

Plant pines and cypresses on the tomb after death. Sometimes poplars are planted. I heard that the trees on Xianyang's grave smoked three poplars. ) But the image of pine and cypress alone does not mean death. There must be a grave/mound/hill/garden/ground, which means a grave.

Old Beijingers never plant pine and cypress trees in quadrangles. Similarly, even the best mulberry trees will not be favored by their owners. As for refreshing pears, their trees will be shut out of the front yard and backyard. Why? It is probably the homonym of "mulberry", "mourning", "pear" and "separation". There is a saying in Beijing: "Mulberry, pine, cypress, pear and Huai are not allowed to enter the government." This is a fact.

People in the cemetery call the yard where the living live a house, which means vigor and vitality. The cemetery where people who have ended their lives are kept is called a ghost house. Yin houses generally plant pine trees and cypresses, which means that the thoughts of the deceased will last forever. In addition, planting pine and cypress trees also has the functions of soil and water conservation and grave maintenance.

Of course, people plant trees in your home to find traces of their loved ones. When they grow up, they can see the center I want to worship and sweep from a few miles away. On the contrary, no matter how delicious the mulberry is, it will not be loved by the owner, and the pear with refreshing taste will be rejected by the front yard and backyard.