It is a custom of the Miao people in Guizhou to "shoot the back card". It is said that young people who love each other are forced to separate because the woman marries another person. They will pick a day to be presided over by the elders of the clan, and let the man shoot the "back card" made by the woman with an arrow. This arrow means that the marriage is bound to the next life, that is, the next life will definitely stay together until old age. However, it also represents the promise of never seeing each other again in this life. "Although from a scientific point of view, this should generally be attributed to the product of national customs that are similar to anti-concentration thinking, but such customs have indeed comforted men and women who were hurt by love, and indeed gave them strong spiritual belief and strength. ."