What is the "fold" in Feng Shui?

The so-called "folding" means that two numbers add up to ten, which means folding. In the gossip of the day after tomorrow, the divinatory symbols represented by composite numbers are relative, such as one column relative to nine, two Kun relative to eight, three earthquakes relative to seven, and four trainings relative to six cadres. Kong Xuan Feng Shui believes that folding together is a symbol of good luck. On the house chart, for example, stacking a star and a lucky star, stacking a mountain star and a lucky star, or stacking a mountain star, a star and a lucky star are all symbols of good luck. However, if you encounter the pattern of going up the mountain and entering the water, there is no water behind. Although the plate is full, it is not auspicious.