慎入，發生在某大國的事情。

https://www.reddit.com/r/China_irl/comments/1j9ag6x/%E5%B9%BF%E4%B8%9C%E4%BD%9B%E5%B1%B1%E4%B8%89%E6%B0%B4%E5%86%9C%E4%B8%9A%E5%86%9C%E6%9D%91%E5%B1%80%E6%B4%BB%E5%9F%8B900%E5%8F%AA%E6%B5%81%E6%B5%AA%E7%8C%AB_%E8%A7%86%E9%A2%91%E6%85%8E%E5%85%A5trigger_warning/