Divided into two lines: main line and double line. Qi Great Wall originated in Pingyin County, Jinan City, on the east bank of Gujishui River, passed through the top of Dafeng Mountain, winding thousands of miles, reaching Yujiahe Village in the east of Huangdao District, Qingdao City, and entering the sea in the north. According to relevant information, the site construction in Tanjiagou area of Yishui County has always adhered to the policy of "protection first, rescue first". The construction is divided into two main lines, in which the main line runs from Linqu County, Weifang City to Taiping Mountain in Li Quan Township, Yishui County, and then enters Juxian County, Rizhao City, with a total length of 24. 1 km. The double-track line enters Yishui County from Taibaoding at the southern foot of Yishan, southeast along the junction of Yishui County and Linqu County, passes through five towns such as Shagou, Yangzhuang and Fuguanzhuang, and joins the main line at Nansanleng Mountain in Huangnigou Village of Fuguanzhuang Town, with a total length of 42 kilometers.