Who influenced He's calligraphy?

His calligraphy began in Yan Zhenqing, especially Yan's "competition for seats". So his early book style is close to this post. Later, in the years of studying and being an official, he traveled all over the world and visited monuments and biographies, although he also liked to sleep in the wind. During this period, he got to know Bao. Influenced by the Bao family, he went to the North Monument and especially praised the epigraphy calligrapher Deng. He said: "I was surprised to see Mr. Deng's seal cutting, sub-seal cutting and seal carving. I hate meeting my husband." However, Mr. Wang's book is full of ancient power and unprecedented meaning, so he claims to know it. " ("After the book was printed by Mr. Deng Wanbo? In order to keep the works, especially Deng's calligraphy, both rigid and flexible, pure in brushwork, "not to make it oblique, ready for a turning point" and "quasi-straight to show its magical power". At this point, great changes have taken place in He's artistic thought, and his calligraphers and followers have also moved to He Suiliang, where the Northern School was introduced, from which it can be traced back to the stone tablets of the Northern Dynasty and the stone carvings of the Qin and Han Dynasties.