Plum is usually open in winter and spring, in the traditional Chinese culture, and blue, bamboo, chrysanthemum together as a "four gentleman", also with pine and bamboo together as "cold three friends." And the so-called "Chunlan flower, summer lotus flower, autumn plum blossom, winter plum blossom", plum with cold characteristics, become the representative of the winter flowers, but also the Chinese people's national flower, due to plum blossom cold winter (more cold and more flowering), Fortitude, holiness, on behalf of the Chinese people's national spirit, so was selected as the national flower.