"Oops, I guess they didn't appreciate my anti-foreigner stance as much as I thought they would. #BoxerRebellion #ChinaVsTheWorld" - Empress Dowager Cixi

Jun 21, 1900 - Boxer Rebellion: China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
https://en.wikipedia.org/wiki/Boxer_Rebellion