Is Cao Guxi's calligraphy valuable?

Cao Guxi's handwriting is very valuable. According to relevant public information, Cao Guxi was originally named Cao Guoxi, and his pen name was Gu Xi. Shaanxi Qingjian people. ** * party member. 1962 graduated from Yanchuan Middle School in Shaanxi Province. In the same year, he worked as a cook, correspondent, secretary of the Communist Youth League Committee of the commune, deputy head of the propaganda group and leader of the communication group of the county revolutionary committee, deputy director of Yan 'an literature and art creation research office, member of the party group of the Federation of Literary and Art Circles, executive vice chairman, editor-in-chief and editor-in-chief of Yan 'an Literature. Director of Yan 'an Literature and Art Society in China, executive director of Provincial Writers Association. 1963 began to publish works. 199 1 Join the Chinese Writers Association. He is the author of poetry anthology Yan 'an Mountain Flower (Cooperation), The First Hope and My Northern Shaanxi, and documentary literature anthology Takada Houtu, Son of the Mountain, Dedication Tree, People's Reporter Feng Senling, Memories Collection, New Yan 'an Literature Series Poetry Volume, and New Yan 'an Literature Series Poetry Volume. His works won the 1993 award for outstanding works in the middle stream and the Shaanxi double five-year literature prize. I won the first Yanhuang Excellent Literature Award of Shaanxi Provincial People's Government from 65438 to 0999.