In 1900, the Tang Dynasty's "Book of Freeing Wife" was unearthed in Dunhuang.
It is as follows: "Any reason for being a couple is that they were connected in three lives in the past life, and then they are qualified to be husband and wife in this life. If the relationship is not compatible, it is like enemies, so they come to face each other; that is, because the two hearts are different and it is difficult to come to the same mind, they will soon meet all relatives and return to their original ways. May wives and ladies After the separation, we combed our temples again, beautifully swept our eyebrows, and chose a high-ranking official. Let's resolve the grievances and let the two be happy. We will give you clothes and food for three years, and I wish my wife a long life."
The author felt this, so he wrote this article.