Gu Chaohao, Gu Yong, Gu Nalu.
Gu Chaohao
A famous Chinese mathematician and former president of the University of Science and Technology of China.
Gu Yong
Ziyun, a native of Chang'an in the Han Dynasty. When he was young, he served as a minor official in Chang'an. At the beginning of the founding of the People's Republic of China (32 BC), Zhiliang Zhi was promoted to Shangdi (an outstanding talent), and he and Lou Hu (named Junqing) were both honored guests of the Five Lords. People in Chang'an say that "Gu Ziyun's writing is like Lou Junqing's lips and tongue". From official to great agricultural officer.
Gunalu
A native of Changle in the Tang Dynasty. It covers a wide range of books and was called the "Nine Classics Library" by Chu Suiliang, a famous calligrapher in the Tang Dynasty. During the Zhenguan period (627-649 AD), he was appointed as a Jianyi doctor and a bachelor of Hongwenguan