Solar terms of the length of the sun shadow
The summer solstice has the longest sunshine and the shortest night. When the sun reaches the highest position, its shadow is the shortest. Therefore, this day is called the summer solstice. Although the sunshine duration from summer solstice is the longest, it is not the hottest time in summer.
Before the summer solstice, the temperature was ok, not too hot. After the summer solstice, the temperature will continue to rise and the weather will get hotter and hotter. That's why it's said. For example, this year, it is raining in most parts of the south these days. After the rain, the weather will become cool. Once the rainy season is over, the temperature will gradually rise, and then it will be the hottest time.
For many friends living in rural areas, they may be familiar with the traditional 24 solar terms, otherwise there would be no such thing as "four seasons and eight festivals". The annual summer solstice is coming, and many places are experiencing intense summer harvest and summer sowing. Therefore, the summer solstice is not only the joy of celebrating the harvest, but also the expectation after sowing.