Giant pandas have been living on the earth for at least 8 million years. They are known as "living fossils" and "Chinese national treasures", and are the flagship species of biodiversity protection in the world. In 2013, CNN selected the world's cutest species list, and the giant panda ranked third. Giant pandas are endemic species in China, and the main habitats are mountainous areas in Sichuan, Shaanxi, and Gansu. Live in dense bamboo forests at an altitude of 2600-3500 meters, where the air is thin all year round, the clouds are misty, and the temperature is below 20 ℃. There are plenty of bamboos and the distribution of topography and water resources is beneficial for the species to build nests, hide, and nurture cubs.