Who was the first person in China to write block letters with a pen?

Lu Zhongnan's block letters are the best in hard pen. He started in Ou Kai, followed by Tian Yingzhang and Wu Yusheng, who were also famous printing masters. Li Fangming's running script and running script are very good, but don't learn from Pang Zhonghua and Si Mayan. Pang Zhonghua's handwriting is too melodramatic and peaceful, and Si Mayan's copybooks are all computer-synthesized, not real handwriting. Writing words like that is too fake, although it looks beautiful. However, there are few copybooks published in Lu Zhongnan, and there are no hard-pen copybooks. At present, the most, but Mr. Tian's running script is not very good. It's hard to write. Only regular script is recommended. He is also a serious calligrapher from Ou Kai.