顾颉刚
Towards the end of the Qing and in the early 20th century, reform scholars such Liang Qichao, Hu Shih and Gu Jiegang saw in "kaozheng" a step towards development of empirical mode of scholarship and science in China. Conversely, Carsun Chang and Xu Fuguan criticized "kaozheng" as intellectually sterile and politically dangerous.