Blue Mountain Introduction: Lanshan County, a county under the jurisdiction of Yongzhou City, Hunan Province, is located in the southern border of Hunan Province, on the north side of the middle section of the Nanling Mountains. It is known as the “Chuwei Yuetou” and is an important gateway to the coastal areas of Hunan. The Blue Mountains are located in the foothills of Jiuyi Mountain. The terrain slopes from the southwest to the northeast. The mountains, hills, hills and plains are intertwined. It is dominated by mountains and is a typical mountainous county. Lanshan County is bordered by Linwu County in the east, Jianghua Yao Autonomous County in the south and Lianzhou City in Guangdong Province. It borders Ningyuan County in the west and Jiahe County in the north. It is 33 kilometers south of Yonglian Highway from the county town and to Guangdong Province. Lanshan County is 420 kilometers north of Changsha, 320 kilometers south of Guangzhou, and 322, 216, and 314 lines of provincial roads meet. In 1998, Lanshan County was awarded the title of “Model Unit of National Unity and Progress” in China. In 2012, Lanshan County was rated as “Advanced County of Population and Family Planning Work in Hunan Province”. On August 15, 2012, Lanshan County entered the top ten counties of county-level economic development in Hunan Province. [1-2]