This paper discusses the relationship of Hetu and Luoshu with theory and methodology in Neijing, and theory system of traditional Chinese medicine, and suggests that sages of the Chinese nation have created mathematics symbols and models of theory of yin and yang like Yitu to simulate and describe the relationship between human being and the nature.

On Return-optimal Trading Strategy Algorithm;

Research on the Pricing and Trading Strategy in Merger and Acquisition;

In a realistic market,order execution delay is a popular phenomenon,and has not attracted the attention of researchers during the study of optimal trading strategy.

The choice of trade strategy of the developing countries in the 21st century;

Trade Strategy and Policy for China's Oil Security;

In the meantime, it is necessary to choose the agricultural product trade strategy based on relative advantages and that can be integrated into world trade system, that is, to improve resource arrangement efficiency based on the promotion of strategic .