Which teacher knows something about Sun Xingyan or information about him during Qianlong Jiaqing period of Qing Dynasty,

Sun Xingyan (1753~ 18 18) has deep words, such as Ji Chou and Fang Maoshan. Jiangsu Yanghu (now Wujin, Jiangsu) people. In the fifty-second year of Emperor Gaozong (1787), he was a scholar, a minister of punishments, a provincial judge in Shandong, and a minister of politics. Jiaqing lost his mother for four years, returned to his hometown, and was hired by Ruan Yuan to teach in Jingjing Jingshe. Later, he served as the governor of Shandong, and retired due to illness in Jiaqing eleven years. In his later years, he gave lectures at Jingjing Club in Hangzhou and Zhongshan Academy in Nanjing. He made close friends with Bi Yuan, Qian Daxin, Hong, Ruan Yuan and so on, and played an active role in the activities of visiting immortals.

Sun Xingyan enjoyed a high reputation for poetry since he was a child. He studied under Qian Daxin, specializing in Confucian classics, philosophers, literature and epigraphy, and left many works, such as Annotations on Ancient Books of Shang History, Collection of Zhouyi, Compilation of Tianjin Pavilion's Stone Tablet, Textual Research on Tang Ming, Textual Research on Chunqiu Biedian and Textual Research on Wei Shijing. On the aspect of epigraphy, Sun Xingyan wrote Textual Research on the Stone Carvings in Gyeonggi, especially The Record of Visiting Historic Sites, which was a national catalogue of stone carvings and was an epoch-making creation at that time. Sun Xingyan is good at collating and calligraphy, good at seal script, and studied under Qin and Han Dynasties. Since Sun Xingyan devoted himself to epigraphy after middle age, his calligraphy can only be used as an accessory to his academic research. Sun Xingyan's seal script style is still dominated by the old school of Wang Shuyi, and the change of brushwork is even more exaggerated.