Rice, oil, salt, sauce and vinegar tea, that is, seven essential things in daily life, commonly known as seven things to open the door. In the Song Dynasty, Wu recorded in "Meng Liang Lu Jie's Biography": "Those who can't afford to build a family every day, rice, oil, salt, sauce, vinegar and tea." In the Yuan Dynasty, Wuhan minister Yu wrote: "Seven things to get up in the morning, rice, oil, salt, sauce, vinegar and tea."
Daily necessities are just a comparison, which shows that a family can't live without these things. It is closely related to love and marriage, because in the future, people will have to eat and drink if they want to live. Without these things, you won't feel the taste of home.
Marriage is only the final result of love. Without romance, living in a stagnant pool can only show that the ability to obtain happiness is too weak. Such love will eventually break up even if it is not married. This has nothing to do with marriage, but with the ability to get happiness in life.