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5 things you may not know about the Spring Equinox

Swallows fly north

The ancient Chinese people divided the fifteen days of the Spring Equinox into three "hou's," or five-day parts. As the old saying goes, swallows fly back to the North in the firsthou; thunder cracks the sky in the secondhou; lightning occurs frequently in the third hou, which vividly reveals the climate feature during the Spring Equinox.

[ Editor: Xueying ]