先天八卦,是乾坤定南北,坎离定东西,是天南地北为序,上为天为乾,下为地为坤,左为东为离,右为西为坎。故先天八卦数是:乾一、兑二、离三、震四、巽五、坎六、艮七、坤八。它的中间数为0,以代表五或十。0象征着宇宙的元气。它的序数对宫相加之和为九数。 先天八卦数是先天存在的,是被后人发现并推演出的,遵循“太极生两仪,两仪生四象,四象生八卦,由下往上,先阳后阴”的规律。先天八卦,俗称连山易。先天八卦的卦序是:一乾、二兑、三离、四震、五巽、六坎、七艮、八坤。确定天地方位,对大自然的总体描述。
天帝藏书处所藏的第一部天书就是伏羲在阆中创制的先天八卦。
The first Heavenly Scripture stored by the Supreme Being in his book storage is the Early Eight Diagrams compiled by Fuxi in Langzhong.
先圣伏羲氏创作了先天八卦,周文王根据伏羲氏的先天八卦又创作出后天八卦,并推演出六十四卦。
Sage Fu Xi drew the Innate Gossip and Zhou Wenwang made the Acquired Gossip according to Fu Xi's Innate Gossip and further pushed the performance of the sixty-four hexagrams.
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