Chuang Tzu says

: “The emporer of the South Sea was called Shu [breif], the emporer of the north seas was called Hu [sudden], and the emporer of the central region was called ‘hun-tun” [chaos]. shu and hu from time to time came together for a meeting in the territory of hun-tun, and hun-tun greeted them very generously. shu and hu discussed how they could repay his kindness. “all men,” they said, “have seven openings so they can see, hear, eat, and breathe. but hun-tun alone doesnt have any. lets try boring him some!”
every day they bored another hole, and on the seventh day hun-tun died.