官渡之戰 [ㄍㄨㄢ ㄉㄨˋ ㄓ ㄓㄢˋ; guan1 du4 zhi1 zhan4] battle of Guandu of 199 that established Cao Cao's 曹操 domination over north China, at Guandu (near modern 許昌[ㄒㄩˇ ㄔㄤ; xu3 chang1] in north Henan) ◄ ►