How to distinguish Yangchun from Yinchun?

The yin and yang mentioned here can be divided into the most intuitive feelings. In our impression, there is plenty of sunshine during the day, the temperature rises, the sun shines high, and the yang is a warm feeling. And at night, because the night is dark, the night is when the temperature drops, giving people a cold feeling, so the night is cloudy. According to the saying that it is sunny during the day and cloudy at night, let's see when the solar terms in beginning of spring will come.

On February 3rd, the beginning of spring solar term came, but it didn't officially enter the beginning of spring solar term until 22: 58: 39 in the evening. That is to say, the 3rd day is still the time of the great cold solar term, while the solar term in beginning of spring is just after 23: 00 on the 3rd night, and the temperature drops, and it is cloudy. At this time, it will feel as cold as spring, so it is considered as cloudy spring.

As the saying goes, "cold spring is cloudy, warm spring is sunny", which tells us that there will be two different weather conditions when we are in beginning of spring.

If it is warm spring to enter beginning of spring during the day, the temperature will rise quickly this spring, and it will be sunny in the later period, which is beneficial to the warming and growth of crops. But if the evening is spring, which belongs to cloudy spring, then this spring will be rainy and cold weather, which is not conducive to the vernalization growth of crops.

This year, the solar term in beginning of spring came to February 3 at 22: 58: 39, and the evening was cloudy in spring.