China's traditional morality is that pines, bamboos and plums will not die in winter, so they are called "three-year-old cold friends". Pine, bamboo, plum proud wind, standing in the frost, the spirit is commendable! Pine symbolizing evergreen, bamboo symbolizing gentleman's way, and plum symbolizing purity and beauty, because it can still be evergreen in cold winter.
In the old society, when getting married, couplets of "bamboo shoots are born on the edge and plum blossoms are red and solid" were often posted around the gate, because "bamboo shoots" and the word "sun" of later generations are homophonic and appear at the same time. Round pine, bamboo and plum into a ball.
Divided into three groups, the pine, bamboo and plum are represented by simple lines to form a pattern: the cave gate composed of pine, bamboo and plum.
Extended data:
1, loose
Pine, the general name of Pinus, many of which are called "Chinese fir" in Chinese. The general feature is that the leaves are shaped like needles to prevent a lot of water from being evaporated.
In some places where the climate is not so hot, it is about 40 degrees to 60 degrees north latitude (such as Europe, etc.). ), this kind of plant is also more common. Leaves flat, linear or needle-shaped, spirally alternate, or clustered on short branches; Often monoecious; The stamens of cones and seed scales with ovules are also spirally alternate.
As far as the leaf shape of pine trees is concerned, pine needles are most people's impressions of pine trees. Each pine needle is wrapped by a thick cuticle and a waxy outer membrane, which reduces the loss of water in pine trees and is also the secret of pine trees' survival in a very dry environment. And Mei Zhu are also called "Three Friends of Old Cold".
2. Bamboo
Bamboo is also called bamboo. There are many kinds, such as arrow bamboo. Perennial Gramineae Bambusoideae, with woody stems, is a branch of Gramineae, which is most concentrated in tropical and subtropical areas, East Asia, Southeast Asia, Indian Ocean and Pacific islands. There are many kinds, some as low as grass and some as high as trees, and they grow rapidly.
Usually it grows by creeping roots underground, and it can also be propagated by flowering and seed setting. Seeds are called bamboo rice.
Some kinds of bamboo shoots are edible. Bamboo sticks are tall and straight, slender, evergreen all the year round and proud of first frost, which is deeply loved by the people of China. He is also called four gentlemen with Mei, Lan and Ju, and three friends with Mei and Song. There are many literati in ancient and modern times who love and chant bamboo.
3. Education and Industrial Mathematics (short for Mathematics in Education and Industry)
Plum is native to southern China and has been cultivated for more than 3000 years. There are many varieties of plum, whether it is ornamental or fruit trees. Many types are not only cultivated in the open field for viewing, but also planted as potted flowers to make plum piles. Flowers can be refined, and flowers, leaves, roots and seeds can be used as medicine.
The fruit can be eaten, pickled or processed into Senecio scandens, or smoked into ebony, which has the effects of relieving cough, stopping diarrhea, promoting fluid production and quenching thirst. Plum blossom can resist the harm of root-knot nematodes and can be used as the rootstock of drupe fruit trees.
Plum blossom is the first of the top ten famous flowers in China. With orchids, bamboos and chrysanthemums, they are listed as four gentlemen, and with pine and bamboo, they are also called "three friends of the old cold".
In the traditional culture of China, Mei gives people an incentive to work hard with her noble, strong and modest personality. In the cold, before the flowers bloom, the world is lonely, and spring has come.