Many people say that Kang Sheng's calligraphy is the best in modern times, especially Cao Zhang, which is far above Guo Zhiruo. what do you think?

Regardless of Kang Sheng's character and morality, as far as calligraphy attainments are concerned, no one can beat him in the past 100 years, especially Cao Zhang. According to his own words, he can write with his left hand far better than Guo Moruo, and the artistic value of calligraphy is very high. But because of the wrong political line and bad personality, the market price has not been high, but it is definitely worth collecting.