早在公元前四世纪时,伟大哲学家庄周在他的遗著中留下了一句“朝菌不知晦朔”。朝菌是指木槿花。阴历以每个月的末一天为“晦”,按着第二个月的第一天为“朔”。二千四百年前的古人已经观察到木槿的花只有一天的存活期。诗经里的《郑风》中有一首诗歌,其中有句“有女 As early as the fourth century BC, Zhuang Zhou, a great philosopher, left an inscription in his left hand book, “I do not know anything about the moon.” North Korea refers to the bacteria Hibiscus. Lunar calendar to the end of each month as a “dark”, according to the first day of the second month as “moon.” The ancients of 2,400 years ago have observed that the flower of hibiscus is only one day old. There is a poem in “Zheng Feng” in the Book of Songs, among them "there is a girl