Updated March 26, 2024

In order to maintain the quality of articles and maintain the open and sharing spirit of the Internet, all original articles on this site are licensed under the stricter Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, hereinafter referred to as CC BY-NC-SA 4.0. We hope to clearly and clearly introduce to you the copyright agreement standards and requirements adopted by this site so that you can use the articles on this site within a reasonable scope.

This site strictly adheres to the principles of no advertising and commercial practices. Violation of this agreement undermines the healthy development of the entire copyright environment. We urge you to abide by this agreement when reprinting to avoid a negative impact on your goals and promote a positive creative environment.

Scope of application

Contents applicable to this Agreement include but are not limited to:

  • All original articles on this site are clearly marked with copyright information at the end of the article.
  • For non-commercial reprints in full, the source of the article must be clearly indicated and a full URL link to the original text or other direct access to the original text must be attached.
  • When the content of the article is used as a reference, excerpts of necessary parts are allowed, but the source must still be noted.

Your Rights

Subject to this Agreement, you may:

  • Feel free to share articles on this site - copy and distribute this work in any medium and in any form without prior notification to the author.

Your obligations

When using the content of this site, you need to follow the following rules:


  • You must clearly indicate the source of the article, and it is recommended to provide a link to the original text in a prominent position in the article so that readers can easily access the original content.

Commercial use prohibited

  • Articles on this site are for personal study and research only, and any form of commercial exploitation is prohibited, including but not limited to inserting advertisements into reprinted articles or requiring users to perform additional operations (such as following official accounts, downloading apps, etc.) to obtain content.

No interpretation allowed

  • It is not allowed to modify the original content in any way and re-publish it publicly. If you have suggestions for improvement or need to create derivative works, please feel free to communicate with us through the comment area or other contact methods.

The following content is protected by copyright:

  • Article cover image (except for the source marked at the bottom of the article)
  • Article title and text
  • Our logo and brand

Special cases

  • This site encourages an open spirit. If you need to authorize the sharing and distribution of derivative works, please leave a message under the corresponding article.

Through the above regulations, we aim to create an online environment that respects copyright and encourages innovation. Thank you for your understanding and support.