That is to say, the strong elements in both people's Eight Characters may be considered as obstacles, but they can be used effectively by each other, making full use of their strengths. In this way, the two people complement each other and have a high degree of mutual dependence. Each can accept the other's weaknesses. As the saying goes, "Beauty is in the eye of the beholder," which is precisely the reason. Because in the eyes of the other person, these are not flaws, but rather expressions of your attractiveness. They represent your strengths and advantages in his or her mind.

The compatibility and mutual benefit between the day branches reflect the adaptability of marital life and the interaction and communication between the couple. The main reason why the day branches of the two people need to be compatible or beneficial is that they can at least live peacefully together. Clash, mutual restraint, or mutual injury, are manifestations of conflict and enmity.
Unless the two people's Eight Characters do not contain each other's spouse stars, and the day branch of each is the taboo element or enemy element in their own Eight Characters. In such cases, although there are many conflicts and it is difficult to get along, after the conflict, they can discover each other's strengths and the relationship becomes deeper.

In specific terms, there is the attraction of Yin and Yang. For example, if the man's stem is a Yang character, the woman's must be a Yin character; if the woman's stem is a Yang character, the man's should preferably be a Yin character. Since the beginning of the division of Heaven and Earth, the mutual attraction between Yin and Yang has become the way of reproduction of all things, and naturally also the way of marital relations.
In addition to the attraction of Yin and Yang, the strongest attraction is also the Five-Element Union of the day stems. That is, Jia and Ji combine, Yi and Geng combine, Bing and Xin combine, Ding and Ren combine, Wu and Gui combine. In fact, this kind of combination represents the typical model of male and female Yin-Yang union.
The reason why two people develop feelings is also related to the generation path of their day stems. For example, Ding Fire meets Jia Wood, Bing Fire meets Yi Wood; or Jia Wood meets Ding Fire, or Yi Wood meets Si Fire. The same applies to others, as they conform to their respective generation characteristics. This situation usually occurs when the day stems of each are in a mutually supportive environment, and they can generate a mutual beneficial function.