What does it mean to get married in first class?

First-class marriage means that the eight characters of men and women complement each other, and the dates of birth of both parties do not coincide. A superior marriage is a good marriage, which not only makes the married life happier, but also benefits the growth of the next generation. However, both men and women who are happily married should also pay attention to mutual tolerance and understanding. If men and women can't tolerate and understand each other in marriage, there will be many problems in marriage.