1. After combining the fortunes of both parties, they will not harm each other’s destiny.
2. It is best if the taboo god of one party's destiny can be transformed into the favored god of the other party's destiny; the next best thing is that the taboo god of one party's destiny can be restrained by the opponent's destiny.
3. The Xiyongshen in one party’s destiny is insufficient in power, but the Five Elements in the other party’s destiny can just supplement it.
4. The combination of the fortunes of both parties will not harm each other’s original wealth and longevity.
5. After the fate of both parties is combined, they will not harm each other’s original child stars.
6. Whether the children's houses of both parties are in opposition or congruent
7. It is best for the fortunes of both parties to complement each other.
8. It is best for the life palaces to be in harmony to avoid conflict and square.
9. It is best for fetal elements to be in harmony to avoid conflict and punishment.
10. Whether there is a conflict or conjunction in the palaces of the spouses of both parties.
To analyze the above ten items correctly in the Zhouyi Hebazi, it takes time and effort. There is no free service for this. You can also use the online horoscope software to combine them yourself. But the software can only be used as a game for entertainment.