Ancient Secrets: China's Lost Pyramids (2013)
Chinese pyramids are ancient mausoleums and burial mounds built to house the remains of several early emperors of China and their imperial relatives. About 38 of them are located around 25-35 km north-west of Xi'an, on the Qin Chuan Plains in Shaanxi Province. The most famous is the Mausoleum of the First Qin Emperor, northeast of Xi'an and 1.7 km west of where the Terracotta Warriors were found. Chinese pyramids were also built during the Han, Tang, Song, and Western Xia dynasties.
They have flat tops, and thus are more similar in shape to the Teotihuacan pyramids north-east of Mexico City, Mexico than to the pyramids in Giza, Egypt. Although known in the West for at least a century, their existence has been made controversial by sensationalist publicity and the problems of Chinese archaeology in early 20th century.