Liu Yizheng was a Chinese modern historian, calligrapher, librarian, cultural scholar, educator, and academic leader. He is known for his personal charisma, spirit and eruditeness. In modern Chinese academic field, it is said that the number of famous experts in various fields including in literature, history, geography, philosophy and even natural science he educated and enlighted was the most. Liu Yizheng and Wang Bohang were honorifically called Nanyong Double Pillars during early period of Republic of China.