In fact, the number twelve is very strange, such as the current twelve months, twelve earthly branches, the corresponding zodiac, twelve constellations, twelve o'clock and so on. , and twelve in the measurement is a "hit" and so on.
Why twelve? It is said that the reason is that ten fingers and two feet are convenient for counting. In packaging science, it is 3X4= 12, and the packaged box is more in line with the aesthetic golden ratio. If it is 2X5= 10, it will be ugly. Besides, if you dance, twelve people can form a beautiful formation. In short, 12 is very suitable for expressing more numbers and concepts. So in A Dream of Red Mansions, there are not only stories of twelve women, but also many stories of many women.