It os common knoeledge that there are only thirty days in a month. Counting the time of one night for half a day, our forefathers managed to expend the month by fifteen days.
一个月本来只有三十天，古人把每个夜晚的时间算作半天，就多了十五天。
It os common knoeledge that there are only thirty days in a month. Counting the time of one night for half a day, our forefathers managed to expend the month by fifteen days.
一个月本来只有三十天，古人把每个夜晚的时间算作半天，就多了十五天。
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