Complex sentence: Qian Daxin (1728--1804) was a historian and linguist of Qing Dynasty China, who served as a commissioner of education and examinations in Guangdong Province.
Split into simpler sentences: Qian Daxin (1728--1804) was a Qing dynasty scholar-official, historian, and linguist. He served as a commissioner of education and examinations in Guangdong Province.