One of the most precious plants-Cryptomeria fortunei, known as "Plant Panda", is the only plant in China at present. In the late tertiary, two or three million years ago, glaciers came to the earth, and the temperature plummeted, and Yinshan's team was almost wiped out. At present, only in the southwest of China at low latitudes, because the mountains are towering, blocking the attack of glaciers, the silver fir there has survived. These precious trees. People call them "glacier elders". In 1950s, Zhong et al. of Guangxi Institute of Botany discovered Cryptomeria fortunei, which caused a sensation in the international biology field. 1957, two famous botanists in China named it Chen Huanyong and Kuang Keren. Cryptomeria fortunei is a tall evergreen tree of Pinaceae, which mostly grows on or near the ridge at an altitude of 1400- 1800 meters. Cui Ye Changqing has two silver balloons under the linear leaves. Under the breeze, they shine like pearls, so they are also called "beautiful pearls".