Hi @pollenwang,
Thanks for your review.
We understand that you’d like Yoast SEO to provide better support for the Chinese language.
As much as we would like to make Yoast SEO (and the content analysis) 100% accurate for all languages, the reality is that all languages are different, and each language has its own nuances and differences, which take a lot of work and resources. We try our best to expand to more languages and make sure that more assessments are correct for each language.
That said, we have an open feature request to improve the content analysis for Asian languages. If you would like to follow the progress, you can do so here: https://github.com/Yoast/wordpress-seo/issues/17323