A red thread, a happy marriage in love is like oxygen. What do you mean?

The two sides tied with the red line are good spouses arranged by God and have a happy marriage.

"A red thread, a happy marriage in love is like oxygen" is used to describe the happy marriage relationship between two people. "A wisp of red line" refers to the legendary red line used by the elderly under the moon to coincide with men and women, symbolizing that two people are destined to be together. "Love is like oxygen" means that two people are good spouses arranged by God, and "happy marriage" means that both parties have a happy and complete marriage. Conveyed good wishes.