The article number is mainly for the convenience of periodical article retrieval, query, full-text information acquisition and remote transmission, and copyright management. This number is the unique identification of this item in the world. The numbering rules are as follows:

Where: XXXX-XXXX is the international standard serial number (ISSN, see), YYYY is the publication year, NN is the periodical number, PPPP is the first page of the article, CC is the page number of the article, and-is a hyphen.

Brief introduction of hownet:

HowNet, the concept of national knowledge infrastructure, was put forward by the World Bank in 1998. CNKI project is an information construction project aimed at realizing the dissemination, enjoyment and value-added utilization of knowledge resources in the whole society. Initiated by Tsinghua University and Tsinghua Tongfang, it was established in June 1999. On May 20 19, the online learning platform of Scientific Research Integrity and Academic Norms was officially launched in China HowNet.

Refer to the above? Baidu encyclopedia-hownet