> For the complete documentation index, see [llms.txt](https://www.bfm-unity.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.bfm-unity.org/4.0.0/bfm-ds-bi-fang-meng-shu-ju-zhi-chi/zi-chan-pei-zhi/the-tzolkin-calendar/zhuo-er-jin-sheng-ji-a6-an-quan-dai.md).

# 卓尔金升级A6——安全带

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