Is Teacher Tan's work worth collecting?

Teacher Tan's works are worth collecting. According to relevant public information, Tan's works have high collection value. Tan is a national first-class calligrapher and a member of the Asian Federation of Cultural Artists. 1970 was born in Juliye County, Shandong Province. 14 years old began to learn calligraphy. Based on the regular script of Ou Yangxun, Liu Gongquan and Huang Tingjian, the essence of calligraphy is the wonderful way of calligraphy and the spirit of expression.