1 Dou Gu —— Minister in the early years of the Eastern Han Dynasty, Fufeng Pingling's contribution: sweeping the Huns, Ran Yan and Le Gong 2 Sun Simiao —— Wang Yao, Huayuan (now Yaoxian County, Shaanxi Province) Contribution: Sun Simiao's contribution is various, and he has made great achievements in clinical disciplines, dietotherapy, pharmacology and health preservation. Zhang Qian, the diplomat of the Western Han Dynasty, made outstanding contributions to the great cultural integration between China and foreign countries by hollowing out the western regions. 4 Yan Zhenqing-a famous calligrapher in Tang Dynasty, Jing Zhaowannian (now Xi 'an, Shaanxi Province) Contributed by: Yan-style calligraphy has a far-reaching impact on the development of calligraphy art in later generations, and many famous artists after the Tang Dynasty have learned from the success of Yan Zhenqing's political reform. Especially running grass.