颜真卿
One of Dezhou's county Lingxian used to be a big county in China in history, when it was called Pingyuan County. Now part of the ancient city wall of Tang Dynasty still exists in the south of the region. Before the Three Kingdoms formed, one of the three emperors Liu Bei used to be the chief of the county, together with his fellows Guan Yu and Zhang Fei. In addition, it is the hometown of Dongfang Shuo, the most well-known adviser during the reign of Emperor Wu of Han ; In Tang Dynasty, a major figure of Chinese calligraphy, Yan Zhenqing, once took office as the administrator of the county. Today, a memorial hall for the two historic figures is built in the People's Park of Lingxian, where a lot of materials of Dongfang Shuo and stone inscriptions of Yan Zhenqing are preserved.