周易中怎么區分六十四卦中的體卦和用卦
上(shang)爻(yao)是(shi)(shi)陽(yang)爻(yao)稱為上(shang)九,上(shang)爻(yao)是(shi)(shi)陰(yin)(yin)爻(yao)就(jiu)叫(jiao)上(shang)六(liu)。五(wu)爻(yao)如果是(shi)(shi)陽(yang)爻(yao)就(jiu)分別叫(jiao)九九九九五(wu);五(wu)是(shi)(shi)陰(yin)(yin)爻(yao)分別叫(jiao)六(liu)六(liu)六(liu)六(liu)五(wu)。叫(jiao)九我(wo)們(men)就(jiu)知道是(shi)(shi)陽(yang)爻(yao),叫(jiao)六(liu)我(wo)們(men)就(jiu)知道是(shi)(shi)陰(yin)(yin)爻(yao)。
八卦分先(xian)天(tian)(tian)和后天(tian)(tian);六十四(si)(si)卦是(shi)指八卦的排列組合(he),因此(ci)部分先(xian)后天(tian)(tian),換而言之,先(xian)后天(tian)(tian)的六十四(si)(si)卦沒區別。
如(ru)地天泰靜卦(gua),上卦(gua)坤為(wei)(wei)地,下掛乾為(wei)(wei)天。乾卦(gua)為(wei)(wei)體(ti),坤卦(gua)為(wei)(wei)用。二,一爻動(dong)(dong)卦(gua)體(ti)用分(fen)法動(dong)(dong)爻在下卦(gua)則上卦(gua)為(wei)(wei)體(ti),下卦(gua)為(wei)(wei)用。動(dong)(dong)爻在上卦(gua)則下卦(gua)為(wei)(wei)體(ti),上卦(gua)為(wei)(wei)用。如(ru)地天泰二爻動(dong)(dong),則為(wei)(wei)下卦(gua)動(dong)(dong)為(wei)(wei)用,而上卦(gua)為(wei)(wei)體(ti)。
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