Also known as Wanshan, it is located in Qianshan County, Anhui Province. It is named after its main peak, "a pillar of the sky". In A.D. 106, Emperor Wu of the Han Dynasty honored Tianzhu Mountain as Nanyue Mountain. In 589, Emperor Wendi of Sui Dynasty called Nanyue Hengshan Mountain, so Tianzhu Mountain was also called Ancient Nanyue Mountain. In addition, during the Spring and Autumn Period, Anhui was granted land, with mountains and waters. The abbreviation of Anhui Province comes from this, so Tianzhu Mountain is the "source mountain" of Anhui. Tianzhu Mountain is graceful, simple and natural, with strange rocks and beautiful water, ranking first in the South China. 1982 was approved as "the first batch of national key scenic spots" by the State Council, and 1992 was also approved as a national forest park. There is a mysterious valley in Tianzhu Mountain, which is called "the first secret mansion of granite". There are world wonders, ancient caves in Shi Niu and stone carvings; There is "Andan Lake", the third largest mountain lake in China, and Sanzu Temple, the third generation ancestral temple of Zen Buddhism.

Tianzhu Mountain is the first batch of national key scenic spots, national AAAAA-level tourist areas, national forest parks, national geological parks and national natural and cultural heritage sites, and it is one of the "Top Ten Most Potential Scenic Spots" in China. The scenic area is 102.72KM2, and the protected area is 304KM2, which is divided into eight scenic spots: Dalongwo, Bukoji, Longtan River and Xiguanzhai. BC 106, Emperor Wu of the Han Dynasty climbed Tianzhu Mountain and was named "Nanyue". In the ninth year of Emperor Kai of Sui Dynasty, he expanded Xinjiang and renamed Hengshan Mountain in Hunan as Nanyue Mountain, but Tianzhu Mountain was still honored as "Ancient Nanyue Mountain". Emperors of past dynasties personally offered sacrifices or sent officials to pay homage to Tianzhu Mountain in Nanyue. In the Spring and Autumn Period, it was a fief in Anhui, with mountains called Wanshan and water called Wanshui. The abbreviation of "Anhui" comes from this, so Tianzhu Mountain, also known as Wanshan, is the source mountain of Anhui.