Since Neo-Confucianism serves as the foundation of Yi Su-gwang s literary thought,to reconfirm his literary thought is to make preparations for integriting and studying systematically his literary criticism.

Yi Su-gwang names his Cheng Yi and Zhu Xi school of Confucianism "Neo-Confucianism".

In the Korean philosophical and literary circles,Yi Su-gwang is regarded as the founder of"Practical Learning"thinking in korea in the 17th century.

On LI Guang s keeping integrity in later years as Yuan-ming;

Li Guang s Contribution and Position in Relegation Culture of Hainan Island;

Li Guang, in 1106 of the Southern Song Dynasty, entered the highest imperial examination and became one of the successful candidates.

On Li Guangdi’s Contribution to the Development of Mathematics in the Early of Qin Dynasty;

This paper gave a brief discussion about the general comment of Zhouyi ·Xici Zhuan by Zhang Yuzhao and Li Guangdi.

Li Siguang and China's Big Discovery of Petroleum;

Paragon of Autonomous Innovation——Celebrating the 120th Birth Anniversary of Li Siguang

Glory of Geology——Celebrating the 120th Birth Anniversary of Li Siguang,an Brilliant Geologist

Exploring the Thought about "Multi-culture Coexistence" of Mr.Lee Kongqian;

LI Guang-di’s vision on Zhouyi can tong qi;