What's the name of Gan Long's son?

Prince Cheng of the Qing Dynasty was the son of Qianlong XI and the brother of Emperor Jiaqing. During the Jiaqing period, he served as a walker in the Ministry of War. He studied Zhao Mengfu's calligraphy first, then Ou Yangxun's calligraphy characteristics, and copied the calligraphy of Jin, Tang, Song and Ming extensively, forming a style of integrity, beauty, beauty and communication. His calligraphy style is more inherited from Zhao Mengfu's calligraphy, which is very round and beautiful, and has the characteristics of the court's elegant style, but at the same time it has the characteristics of the turning point of Ou Yangxun's calligraphy, which is different from the pursuit of positive beauty in the elegant style. Prince Cheng is famous for his regular script and running script. He is a famous calligrapher in Qing Dynasty. He, Weng Fanggang and Liu Yong are also known as the four great masters of Qianlong.