Under above page format; i.e., inside Box form, the whole user script does not work at all.
(refer URL below, at the bottom of the web page, you will see three white boxes. The left one, in Chinese, is "Previous Chapter". The middle one, in Chinese, is "back to Table of Contents". The right one, in Chinese, is "Next Chapter".
I think this website blocks non-Chinese ip address. I can't visit it. if you would like to provide a v2ray node for me to get back into GFW, I can take a look
Under above page format; i.e., inside Box form, the whole user script does not work at all. (refer URL below, at the bottom of the web page, you will see three white boxes. The left one, in Chinese, is "Previous Chapter". The middle one, in Chinese, is "back to Table of Contents". The right one, in Chinese, is "Next Chapter".
https://www.linshuge.com/book/18708/chapter/16149104.html