Limingguan Pass Ancient Road. [Photo by Tan Dezhi/WeChat account: gh_451d26769981]

Limingguan Pass Ancient Road, or the "Guizhou-Guangxi Tea-horse Ancient Road of Huanjiang", is located within the Mulun National Nature Reserve in the Huanjiang Maonan autonomous county of Hechi, Guangxi Zhuang autonomous region.

The ancient road starts from Jiutun in Shecun village, Chuanshan town, Huanjiang in the east, and ends at the Liming Pass at the junction of Guizhou and Guangxi in the west. It runs north to south and has a total length of 50 miles. The road is paved with stones and the average width is 1.2 meters. It has been well preserved.

The Limingguan Pass Ancient Road is the "silk road" in South China that, in the past, connected Guangxi, Guizhou, Sichuan and Yunnan. Nine barriers were set along the road every few miles, with stone walls at the crossing. The geographical location of the ancient road is very important as it connected Guizhou, Sichuan, and Yunnan with Guangxi, Guangdong and other places, and contributed to economic exchanges.

Now, the ancient road is covered with giant trees in the virgin forest, together with countless rare birds and beasts. The forest is designated by the country as a national first-level primary forest nature reserve.