What's Kyubi no Youko's opinion on Five Strings in Spring? How is beginning of spring time calculated?

The twenty-four solar terms reflect the movement of the sun in one year, and are divided according to the position of the sun on the ecliptic. Depending on the sun from the vernal equinox (longitude zero, at this moment the sun shines vertically on the equator), every advance of about 15 degrees is a solar term; After running for a week, I returned to the vernal equinox. Beginning of spring is a solar term in which the sun is located at 3 15 degrees of the Huangjing.