biblatex-manual
There are 2 repositories under biblatex-manual topic.
hushidong/biblatex-zh-cn
biblatex宏包文档中译版--biblatex宏包中文手册
citedrive/bibtex.eu
bibtex.eu: An open-source documentation resource maintained by CiteDrive for getting started with BibTeX and BibLaTeX. This project provides multilingual guides on reference types, fields, citation examples, FAQs, and tips to simplify citation management for LaTeX and Overleaf users.