> For the complete documentation index, see [llms.txt](https://www.vr9.io.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.vr9.io.vn/power-card-vr9/quickstart-1/uu-dai-tu-he-sinh-thai-vr9.md).

# Ưu đãi từ hệ sinh thái Vr9