Introduction to the Terracotta Warriors and Horses of the Mausoleum of the First Emperor of Qin: The burial pit of the Terracotta Warriors and Horses of the First Emperor of Qin is the largest underground military museum in the world, demonstrating the prosperity and strength of ancient Chang'an. The layout of the pit is reasonable and the structure is unique. At the bottom of the pit, which is about 5 meters deep, east-west load-bearing walls are erected every 3 meters. The terracotta warriors and horses are arranged in the holes in the gaps between the walls. The burial pits are located from west to east, and the three pits are arranged in the shape of a "pin". The earliest discovery was the No. 1 Terracotta Warriors Pit, which is rectangular, 230 meters long from east to west, 62 meters wide from north to south, and about 5 meters deep. It has a total area of 14,260 square meters. It has slope doorways on all sides and a terracotta warriors and horses pit on the left and right sides. It is now called Pit No. 2 and Pit No. 3. It is located in Lintong District, 35 kilometers east of Xi'an City, Shaanxi Province. In addition, the Terracotta Warriors and Horses of Qin Shihuang's Mausoleum all face the sea.