Open Access

This journal is a peer reviewed, fully open access journal owned by Beijing Zhongke Journal Publishing Co.Ltd. Beijing Zhongke Journal Publishing Co.Ltd retains copyright of the overall compiled journal and the compiled issues. The article is universally and freely accessible via the internet in perpetuity, in an easily readable format immediately after publication.

To provide open access, this journal has an open access fee (also known as an article publishing charge APC) which needs to be paid by the authors or on their behalf e.g. by their research funder or institution. The APC for this journal is USD 1000, excluding taxes. For all papers submitted before the 31st of December 2023, the APC will be waived making it free to submit to the journal.

Peer review under the responsibility of Beijing Zhongke Journal Publishing Co.Ltd.

Access Rights
All articles published open access will be immediately and permanently free for everyone to read, download, copy and distribute.

User Rights
Permitted third party reuse is defined by the following user license(s):

Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND):
Allows users to copy and distribute the Article, provided this is not done for commercial purposes and further does not permit distribution of the Article if it is changed or edited in any way, and provided the user gives appropriate credit (with a link to the formal publication through the relevant DOI), provides a link to the license, and that the licensor is not represented as endorsing the use made of the work. The full details of the license are available at

Author Rights
For open access publishing, this journal uses a licensing agreement. For the single article, Authors will transfer copyright to Beijing Zhongke Journal Publishing Co.Ltd, and KeAi Communications Co., Ltd. and Beijing Zhongke Journal Publishing Co.Ltd will be granted non-exclusive publishing and distribution rights. For more information about copyright please find the details on

Publishing Schedule
This journal is published bimonthly per year.

Learn More about:

Contact Details
Ms. Yuan Qi
Phone: +86-10-64010640
Address: Science China Press16 Donghuangchenggen North Street, Beijing 100717, China

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