Study on pteridophyte flora of Guangxi, China;

Comparative analysis on the pteridophyte floral relationships between Wulingshan region and its neighboring florae;

Studies on the pteridophyte flora of Qiyun mountainous region in Anhui Province;

By research on endemism and disjunction, it could be imply the history of diversity of fern flora and could be reveal the relationship of the flora with its neighboring floras.

Studies on the pteridoflora of Pan′an region in Zhejiang Province;

Studies on the pteridoflora of Matoushan Mountain of Zixi County,Jiangxi Province;