What is the artistic achievement of Zhao Yunzhong, a famous calligrapher with Mao style?

Zhao Yunzhong's calligraphy works have won many awards in national calligraphy art exhibitions and competitions, and have been collected by military museums, Chairman Mao Memorial Hall, Hunan Maoti Calligraphy Research Association and other cultural institutions. General Chi Haotian, former deputy and heroic astronaut Yang Liwei, Nie Haisheng, Fei, Mao Anqing, Shao Hua and Mao Xinyu also collected his works successively. His calligraphy works have been published in magazines and newspapers such as Global Chronicle, Calligraphy Guide and Fortune Today, and have been broadcast in many media. On the way to the Long March, in order to promote the art of calligraphy in Mao style, he carefully created nine volumes of poems and songs in Mao style, which lasted for more than two years. Other works were reported by media and newspapers in various counties during the Long March. In his works, the art of Mao calligraphy embodies its artistic charm.