License

Content on this site is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. In other words, you’re free to read everything here, download pages, send them to friends, or even repost them on your own site. Just make sure you credit the author and link back to the source at guangyangli.com.
If you want to do something the license doesn’t cover, like editing the content or using it commercially, get in touch first and I’ll look at it case by case.