The Terracotta Warriors and Horses of Qin Shihuang rank first among many scenic spots in Xi'an. They are also the scenic spots for children to go by name. Terracotta Warriors and Horses are known as the eighth wonder of the world and one of the great discoveries in the archaeological history of the twentieth century. UNESCO has listed Qinshihuang Mausoleum (including Terracotta Warriors and Horses pit) on the World Heritage List. In summer, the temperature in Xi'an is too high. With the humidity in the terracotta warriors and horses exhibition hall, there are many visitors, which makes the visitors feel like steamed sauna.