In winter, the leaves of carambola droop to keep warm. According to relevant public information, carambola is a cold-resistant tree, which will lose its vitality in winter due to the decrease of temperature. Wrapping the bottom of the tree to keep warm can relieve the symptoms of drooping leaves. Carambola is a Myrtaceae Myrtaceae plant, native to Malaysia and Indonesia, and also cultivated in China, Guangdong, Guangxi, Fujian, Taiwan Province Province of China and Yunnan.