What does it mean to get married in six years? What do you mean, four out of six get married?

Six-in-one marriage refers to a high degree of matching in six aspects: morality, economy, family background, education level, hobbies, outlook on life and values. The marriage quaternity goes further, emphasizing the "quaternity", that is, personality, hobbies, values and family values, in order to enhance the stability and happiness of marriage.