Excuse me, what calligraphy font is this?

This font was inscribed by Chen Xilin, a famous calligrapher in China.

Mr. Chen is a noble family. Although he studied modern western science and technology, he never forgot Chinese studies. He studied calligraphy since childhood and was good at Da Zhuan and Huai Su. After People's Republic of China (PRC) was founded, he worked in China Academy of Sciences. Because he worshipped Mao Zedong, he began to learn to imitate hair styles. In 68, when he lived in the bullpen, he was pulled out to write posters. Once accidentally leaked, it became a big event and stabbed Kang Sheng. Kang showed the evidence to Chairman Mao, who smiled and said "almost".