What does meridian collision mean?

Actually, I just heard this proverb not long ago. Yang is most abundant at noon in the morning 1 1 to the afternoon 1, while girls are naturally yin, so they are prone to deficiency of both yin and yang, while men are also prone to collision of yin and yang at noon in the evening 1 1. Here, boys are yin by nature, and midnight is a cloudy day, so it is also a collision of yin and yang.

This "collision of yin and yang" will lead to children's weakness and illness, and their life will be bumpy. Or do nothing.

As for whether there is a scientific basis, in fact, I have read many experiences of boys and girls, as well as my own experience, which is more in line with the facts. It's not without scientific basis. Because many boys and girls' experiences in the next day are really bumpy, weak or mediocre, as the saying goes.