Before coming to Xi'an, I never understood why Qin Shihuang chose Lintong instead of his hometown of Hebei or Xianyang, the capital of Qin. In front of a sand table in the Terracotta Warriors and Horses Museum of Emperor Qin Shihuang in Lintong, a young tour guide proudly explained to us: The talented generals from the south are from the north, and the emperor is buried in the loess from the northwest. She joked that Qin Shihuang rested his head on the mountain, his feet on the water, holding gold in one hand and jade in the other. After what she said, we saw that Qin Ling was indeed a geomantic treasure. To the south is Lishan Mountain, to the north is the Weishui River, to the east is the gold-producing Tongchuan River, and to the west is the origin of Lantian jade. Qin Shihuang started building the mausoleum when he ascended the throne at the age of 13. It can be seen that the young emperor was quite discerning. It is said that the construction of the mausoleum took 38 years, with a maximum labor force of 72 people.