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Pi was a Zhou dynasty (1045–256 BC) vassal state in ancient China. Also known as Xue, Pi was ruled by members of the Ren (任) family.
Read the full article →Not who you're looking for? Others named Pi: constant ratio of the circumference of a circle to its diame · 1998 film directed by Darren Aronofsky · art project · Chinese surname (皮)