What do you mean by "desperate marriage"

Hello, all marriages in Yin and Yang studies are similar, such as desperate marriage, five-ghost marriage, bad marriage, six-evil marriage and so on. Being maliciously interpreted as marriage is not smooth, killing relatives and causing many young people to separate for no reason. According to Yin and Yang, these five incompatible marriages are not impossible to get married, because there is no accident in this world, only necessity. No matter how small the encounter is, it will definitely affect the fate in the future, and the conclusion of fate will not disappear. The world looks big, but it's actually small, limited to what you can see and touch. Therefore, the ancients believed that even if there was a desperate marriage, both parties to the marriage could use "Jade Silk" and add "Yuan Jian Sticker with Hidden Gas, Mustard Sticker with Water Difference and Four Spirits Sticker" to the printed version to dissolve the mutual bondage and get married happily and safely.