"The flow year" refers to the "moving year," such as 2016 being the Bing Shen (丙申) flow year, 2017 being the Ding You (丁酉) flow year, 2018 being the Wu Xu (戊戌) flow year, and so on. For males, the financial star represents the spouse and wealth, while for females, the official star represents the spouse and marriage. Therefore, when the financial star of the male's flow year appears or the official star of the female's flow year is in place, it is the time when the marriage luck is strong.

The marital palace, also known as the spouse palace or couple palace, is the earthly branch of the day of birth. The marital palace represents the romantic partner and marital feelings. According to the principle that "when there is an opposition, there is movement," when the day branch is opposed by the flow year, the opportunity for marriage arises.

When the flow year stirs the marital palace, there is an opportunity for marriage. When the flow year harmonizes with the marital palace, there is also an opportunity for marriage, but this harmonious connection is slightly weaker than the opposing one.

Flower-joy represents the opposite sex relationship and also symbolizes joyous atmosphere. When the flow year encounters the flower-joy, the chance of successful romance is higher. The method to determine the flower-joy in the birth chart: check the year branch or day branch of the birth chart. If the year branch is Shen (申), Zi (子), or Chen (辰), then you should look for "You (酉)." If the year branch is Si (巳), You (酉), or Chou (丑), then you should look for "Wu (午)." If the year branch is Yin (寅), Wu (午), or Xu (戌), then you should look for "Mao (卯)." If the year branch is Hai (亥), Mao (卯), or Wei (未), then you should look for "Zi (子)." Even if there is no flower-joy in the birth chart, encountering the flower-joy in the flow year brings good marriage luck. If the birth chart already contains flower-joy, and the flow year also brings flower-joy, the marriage luck becomes even stronger.

There are five groups of heavenly stem unions: Jia-Ji (甲己合), Yi-Geng (乙庚合), Bing-Xin (丙辛合), Ding-Ren (丁壬合), and Wu-Gui (戊癸合). Especially when the flow year unites with the day stem, the opportunity for marriage becomes stronger. For example, if the day stem is Xin (辛), and the flow year is Bing Shen (丙申), it forms the "Bing-Xin" (丙辛合) union. If the person is female, then Bing (丙) is the official star coming to unite, which means marriage is inevitable.

For example, the Shen (申) of the Bing Shen (丙申) flow year, together with the Zi (子) and Chen (辰) in the birth chart, form the "Shen-Zi-Chen" (申子辰) three-stem union. Similarly, the "Si-You-Chou" (巳酉丑), "Yin-Wu-Xu" (寅午戌), and "Hai-Mao-Wei" (亥卯未) are also three-stem unions. Sometimes, only one character exists in the birth chart, but another character may exist in the major period (Da Yun), and the flow year character can form a three-stem union with these two, thus indicating the arrival of marriage opportunities.
These six points may lead to marriage for some people just by meeting one condition. However, for those whose birth chart indicates difficult marriage, they need to meet two or more conditions—sometimes even three or more—to complete the marriage. It is necessary to combine the original birth chart with the major period for accurate judgment, but in any case, it generally falls within the above scope.