One: The highest-level hard-pen calligrapher in contemporary art in China: regular script: Liu Huipu (Wei and Jin calligraphy style), Xie, (Wei Bei) running script: Luo Hengguang, Ren Ping (both Zhejiang school) cursive script: Ma Ming official script: Cui Xuelu seal script: Fan Zhongyue II: Lu Zhongnan (Ou Kai), Tian Yingzhang and Ding Qian are hard-pen calligraphy. Although Pang Zhonghua, Xi Shu and Si Mayan are famous, I think it is more appropriate to be called "Hard Pen Calligraphy Educators" or awarded the "Hard Pen Calligraphy Popularization Award".
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As an artistic running script, different people have different views. So it can only be said that it is first-class, and it is hard to say who is the first. I can probably list a few: hard-pen regular script: Tian Yingzhang,,, Jing, hard-pen running script: Honggen Shen, Huang Ruozhou, Gu Zhongan, Qian Peiyun, Wu Yusheng hard-pen calligraphy list Liu Huipu. Learning regular script is the only way.