Wen Xuan
The first annotations to the "Wen Xuan" appeared sixty to seventy years after its publication and were produced by Xiao Tong's cousin Xiao Gai. Cao Xian, Xu Yan, , Gongsun Luo, and other scholars of the late Sui Dynasty and Tang Dynasty helped promote the "Wen Xuan" until it became the focus of an entire branch of literature study: an early 7th century scholar from Yangzhou named Cao Xian (曹憲) produced a work entitled "Pronunciation and Meaning in the "Wen Xuan" " () and the others – who were his students – each produced their own annotations to the collection.