立春 Beginning of Spring in Lunar Calendar. Eggs will stand on ends.First Day of Spring 2021: The Spring Equinox

baike.baidu.com/item/%E7%AB%8B%E6%98%A5/8896

This event marks the astronomical first day of spring in the Northern Hemisphere. Before you try to balance that egg.

www.almanac.com/content/first-day-spring-vernal-equinox

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