Bohai Zhongjing National Archaeological Site Park 渤海中京考古遗址公园 Address: Gucheng village, Xicheng town, Helong city, Yanbian Korean autonomous prefecture, Jilin province View of the site of Zhongjing city of the Bohai Kingdom Located in today’s Helong city of Northeast China’s Jilin province, Zhongjing city of the Bohai Kingdom was completed around the year 742. Historical relics of the Bohai Kingdom are …