Why is the sun overhead at noon on the summer solstice?

The meridian collision is a traditional divination method in China, which refers to the moment when the meridian coincides when the sun shines on the equator at noon from summer to Sunday. According to the interpretation of traditional divination, if at this time, the degree of the constellation where the sun is located is 0 degrees, it is called "meridian meets zero yards". It is said that the appearance of this time point will have a certain impact on the economy, wealth, career and family of that year.

According to the traditional order of the zodiac, the summer of solstice belongs to monkeys. Therefore, people born at this special time belong to those born in the Year of the Monkey. Although this statement is not supported by scientific evidence, it is widely circulated and used in China, and some people will make special decisions at this time according to their own birth.