The Introduction of Western Culture and the Formation of Seaside Cultural Style in Qingdao in the 1920s and 1930s

A Study on the New Enlightenment in 1930s;

On the Research Methods of The Book of Songs in the 1920s and 1930s;

Discussions on the Crisis of Rural Areas of the North of China during the Period from the 1920s to the 1930s;