Instructed by the theory of dialectic materialism and historical materialism of the marxism, with the research subject of "Jiangbei Diary", this article analyses its backgroud of its era, origin and main content and induce its characteristic of historical data and states its literature value.

The Content of Lead in the Aquatic Products in Qingyuan Basin of Beijiang River;

Emergent Treatment Techniques and Engineering Measures for Cadmium Pollution in Guangdong Beijiang River;

Emergent drinking water treatment in water pollution accidents in Songhuajiang River and Beijiang River;

Examining Hu Shi s thought of library science from one page of his diary;

This article introduces Tuixiangzhai diary,points out the value of the dirary to the research of politics,the folk custom and merchants of Shanxi,and the value of the dirary to study the recent society history of China.

As a result,Study of Writers\' Diaries in the Period of May 4~(th) is written.

In his newly published diaries and letters,we can find his knowledge and impression of his Leningrad visit including his reading of the Dunhuang Documents there,which is the most detailed records about the documents before their being publicized and thus has considerable historical value.

Zhong Lihe diaries left us a valuable asset,when he was refugee boat ride from Beijing return to home in 1946,the majority of these heavy manuscript paper was taken back to Taiwan.