When was it shocking?

Startling, called "starting a sting" in ancient times, is the third of the 24 solar terms and the beginning of Uzuki. The time is around the first day of the second month of the lunar calendar (between March 5 and 6 of the Gregorian calendar), when the sun reaches 345 degrees of the yellow meridian. Twenty-four solar terms: "February Festival, everything vibrates, and when it vibrates, it thunders. So it is a thorn, and it is a thorn that leaves.