> For the complete documentation index, see [llms.txt](https://www.oulan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.oulan.com/2021/01/28-burden.md).

# 28, 负担

如果\
不能看到光线\
两点之间\
什么会让我们向前？

向前\
动力之源\
就象发条\
什么在给我们上弦？

![](/files/-MS5CIGB70cELMR9OSwi)