吉林市龙潭山“旱牢”是公元前 37 年至公元 660 年，由当时的高句丽人（现大部已融入汉族）建立的用来存储粮食及军需用品的地方，此处常年不积水。周边由大花岗岩石块垒成圆形，直径16.6米， 深 2-3米左右。之所以叫“旱牢”，是有人曾推断这是囚禁犯人的地方，但据现在考证没有发现证据。
Jilin referred to as "Ji", the provincial capital, Changchun. Located in east longitude 122-131 degrees, 41-46 degrees north latitude, an area of 18.74 square kilometers, accounting for 2% of the total area. It is located in the middle of Northeast China, in Japan, Russia, North Korea, South Korea, Mongolia and northeast China, consisting of the hinterland areas of Northeast Asia. North of Heilongjiang Province, Liaoning Province, south, west of Inner Mongolia Autonomous Region, the East and the Russian border, southeast of the Tumen River, Yalu River as the boundary, and the Democratic People's Republic across the River. 650 kilometers from east to west, 300 km from north to south. Southeast high, low northwest of the Midwest is a vast plain. Jurisdiction of Changchun - a sub-rovincial city, Jilin, Siping, Tonghua, Baishan, Liaoyuan, White City, Matsubara seven prefecture-level cities and the Yanbian Korean Autonomous Prefecture.