> For the complete documentation index, see [llms.txt](https://weekly-essay.mikey.wang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://weekly-essay.mikey.wang/zh/2021-nian.md).

# 2021年

年度关键词：熟经济 · 开悟