What solar term is the cold in late spring?

The cold in late spring is usually around the vernal equinox.

Late spring cold refers to the weather phenomenon that the temperature rises rapidly in early spring (generally refers to March) and the temperature in late spring cold (generally refers to April or May) is lower than that in normal years.

Long-term rainy weather or frequent cold air intrusion, or under the control of continuous cold and high pressure, strong radiation cooling in sunny nights is easy to cause late spring cold. Meteorology, after being frequently attacked by strong cold air, the temperature drops rapidly and lasts for more than 1-2 weeks, which is called "late spring cold". Crop freezing injury may occur in "late spring cold" weather, not only in China, but also in Japan, North Korea, India and the United States. The reason is not complicated.