After the matchmaker came to propose marriage, the woman's family was unfamiliar with the man's family, so she asked someone she trusted (mainly family background, family style, etc. ). If she thinks the match is right, when the matchmaker comes to propose marriage again, the woman's family will also talk. In this case, the man can send two posts to the matchmaker. After accepting the post, the woman's family agreed to this marriage, and then the woman's family sent two more posts for the matchmaker to take to the man's house. This is called "spreading red" and "changing posts".
After the red spread, the man asked the matchmaker to send two red paper packages (banknotes) to the woman's house, and the woman's house usually received one package of bride price, but the other package was unacceptable, so he asked the matchmaker to return it to the man's house.