Mr. Cai Minji was born in the "Cai family of traditional Chinese medicine" in Qilu. He joined the army at the age of 18 and has worked in grassroots troops, military region agencies, and headquarters agencies for many years. Mr. Cai Minji has been passionate about calligraphy since he was a child. He has accumulated more than 30 years of study and graduated from the advanced calligraphy class of the China National Academy of Painting