As the leader of literary world in the period of dynamic changes from the Ming Dynasty to the Qing Dynasty, QIAN Qian-yi s advocates "hope heart", "world movement", "learning" to change the gentility of the articles in the Ming Dynasty and makes the writing style in the Song Dynasty modelled in the Qing Dynasty.

This article discusses the connotation of the theory and points out it should be consisted of noble character, profound learning, artistic elegance and distinct style.

What is a doctor?It s not a degree,it should be learning.

As a splendid view in the world of biographic literature, scholar biography has combined their scholarship,personality and life in one book and reflected the trail of 20th Century political,ideological and cultural development in China,embellishing a sentiment of Chinese broad traditional culture.

It is of great importance to the process and quality of chemistry problem-solving whether strategies with chemistry course characteristics can be applied correctly in chemistry problem-solving.

The significance of choosing the proper coordinate system in solving the mechanical problems is illustrated through analyzing incorrect solutions.

The principles and methods of choosing the inertial frames of reference in solving the mechanical problems are analyzed.