Bougainvillea, which means "no true love is a kind of sorrow" in Chapulo, is the national flower of Zambia and Sanya and Haikou in Hainan. Beihai City and Wuzhou City, Guangxi; Sanming and Xiamen in Fujian; Shenzhen, Zhuhai, Huizhou and Jiangmen in Guangdong; And the city flowers of more than ten cities at home and abroad, such as Pingtung in Taiwan Province Province and Naha in Japan. Yezihua is still a traditional Chinese medicine, and the leaves can be used as medicine, mashed and applied to the affected area, which has the effect of dispersing silt and reducing swelling.