lingxianIntroduction：About Ling County: Ling County is located in the northwestern plain of Shandong Province. It is a suburban county of Dezhou City. It is located between the capital Beijing, the port city of Tianjin, and the provincial capital of Jinan. It is known as the “Beijing-Tianjin Gateway, Jiuda Tianzhu”. As of 2013, it has jurisdiction over 9 towns, 3 townships, 1 sub-district office and 2 economic development zones, with a total population of 577,000, including an agricultural population of 480,000, a total area of ​​1,213 square kilometers and 1.2 million mu of cultivated land. Lingxian County has a long history. It is known as the "Chi-sheng" of the Han Wudi Taizhong doctor, writer, and the master of the oriental master of the oriental masters in Shentou Town. Yan Zhenqing's handwritten book "Oriental Paintings and Monuments" is a national first-class cultural relic. It is now in Wenboyuan, Lingxian County. The ruins of the ancient city of Tangyuan County were repaired by Yan Zhenqing when he was doing the Taishou. There are provincial-level key cultural relics protection units “Han Tomb Group”, “Dingdong Reservoir” and “Xianren Lake” with 10,000 mu of water surface.