Four seasons of chun xiaqiu winter exchange, day and night night cycle first is a natural phenomenon, and this natural phenomenon is the rule.
Four seasons of chun xiaqiu winter exchange is due to the existence of JiaoJiao yellow, is because the earth revolves around the sun in the oval track &others formation.
But day and night is the formation of the alternate law due to the rotation of the earth formed (earth does not shine, opaque, only reflects the light of sun, have the light side for the day, there was no light side for the night.
春夏秋冬四季交换、白天晚上昼夜循环首先是一种自然现象，而这种自然现象又是有规律的。
春夏秋冬四季交换是由于黄赤交角的存在，就是由于地球绕太阳在椭圆形轨道上公转形成的。
而昼夜交替规律的形成是由于地球的自转形成的（地球不发光，不透明，只有反射太阳的光，有光的一面为昼，没有光的一面为夜。）
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