夏:夏历我们现在使用的阴历是夏人制定的。事实上殷人有殷人的阴历,周人也自有周人的阴历,殷人要赶在相当于夏历的12月过春节,周人则干脆提前到11月。春秋战国时期,夏历殷历周历都有人使用,于是就有了哪个正月算正月的争论。 Summer: The lunar calendar we are now using the lunar calendar developed by the summer. In fact, there Yin Yin lunar calendar, the Zhou people also have their own people's lunar calendar, Yin to catch the equivalent of the lunar calendar in December the Spring Festival, Zhou people simply advance to November. During Spring and Autumn and Warring States Periods, there were people who used lunar calendar in lunar calendar, so there was a debate about which lunar January was the lunar January.