The original words are "Happy families are all alike, but unhappy families are all different." This sentence comes from Leo Tolstoy's "Anna Karenina" Originally the author wanted to use it as the beginning, but later changed it to the title page. "Happy families are all alike, and every unhappy family is unhappy in its own way." Replacing Leo Tolstoy's widely circulated famous saying with a word is equally valid, and perhaps more in line with the current state of the times: happiness All marriages are similar, and every unhappy marriage is unhappy in its own way.

The reason why marriage is happy must be because it is pure, or based on love. Two people have the same views, the same channel, similar interests, and are at the same level of thought. Only when they stay together like that can they be considered a couple in this world.