Our current Eng/Chinese pages are not the best setup, because of the need to maintain all the correct links. There should be a standard way to support this. Please investigate the following and see how it works:
https://www.klaasnotfound.com/2017/02/16/proper-multilingual-site-with-github-pages-and-jekyll/
https://github.com/Anthony-Gaudino/jekyll-multiple-languages-plugin