1) Why all this sudden change?
何以变卦?
3) fit in Gua with Hou
以卦配候
1.
It could not be established that to fit in Gua with Hou had come into being be-fore Qin Dynasty.
《月令》所记时候尚未形成二十四气七十二候的体系,故以卦配候之学的形成当于《月令》之后,先秦子夏时已有以卦配候之学的说法是不能成立的。
4) Withdraw from an earlier statement or policy;reverse one's previous action
背弃以前的言论或政策;变卦
补充资料：何以
①〈书〉用什么：～教我丨～为生。②为什么：既经说定，～变卦？
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条