郑玄易学爻辰说的哲学文化底蕴

On the Philosophical Implications in ZHENG Xuan's Yao chen Theory

郑玄易学的爻辰说与律吕音声说密切相关,在汉易卦气说的易学大语境下,以爻辰图式呼应八卦卦气图式,视爻为基本单元,涵摄符示了整体天地宇宙间阴阳二气之消息,物候节气时序之更替,万物万象之生化,并令汉代经学所彰显的人文礼乐精神,所重建起的儒家礼乐形态的整体哲学文化价值系统,透过以爻辰说为代表的易学的独特语境,相当完备地传达出来,以此也赋予《周易》郑氏学以突显礼乐文化精神的全新天人之学底蕴。这一爻辰说,继京房易学之后,又一次突显了五行在易学中的显赫位置,还承载了宇宙发生演化的信息,点醒人们深切体悟无字之宇宙大《易》。

ZHENG Xuan＇s Yao chert theory （correlating the twelve hexagram lines of Qian and Kun represented by the twelve earthly branches to the twelve pitch-pipes） is closely related to musicology. Against the grandiose contextual backdrop of the Gua qi theory fcorrelating the trigsams and hexagrams to the seasonal points） , ZHENG＇s diagram of Yao chea was a response to that of Gua qi, in which hexagram lines are regarded as the basic units, symbolizes waxing and waning of the Qi（vital force） of Yin and Yang in the universe, alternation between the four seasons, as well as the creation of all beings in the universe. ZHENG＇s Yi-ology, represented by Yao chen theory,clearly unfolded the humanistic spirit of edifying people by Rites and music in the Han classics studies and the Confucian value system of Rites and music reconstructed hy Han scholars. This coffers upon ZHENG＇s Yi-ology with completely new implications concerning heaven and humanity, and emphasizing sharply the spirit of Rites and music. After JING Fang＇s Yi-ology, Yao chert theory stressed again the powerful standing of the Five-Element theory in the theoretical system of Yi, which also conveys informations relating to the emergence and evolution of the universe, and awakens us to perceive principles of Yi conceiving the great universe unexpressible by words.