Symbolize loyalty with pine and cypress. Pine branches stand proudly, cypress trees are solemn and solemn, evergreen all the year round, and survive the severe winter. "The Analects of Confucius" praises: When the cold comes and the summer goes, you will know that the pine and cypress are withered. Pine trees and bamboo plums are called "three friends of the old cold". In literary and artistic works, pine and cypress are often used to symbolize unyielding heroism.

Bamboo symbolizes integrity. Bamboo is tall, straight and beautiful, and will not wither when it is cold. Since ancient times, it has been widely loved by people. The ancients often used "jade can be broken without changing its color, bamboo can be burned without destroying its festival" to describe people's integrity.

Spring silkworm symbolizes selfless dedication. "Silkworms in spring will weave until they die."