These poems mean that after they get married, they will have a pair of children, green and yellow stay behind, green stands for spring, yellow stands for autumn, which means that there is a child in spring and autumn, and the last one is Dan Guihua, which means that the last one is a daughter, which means that the daughter is going to marry far away. The original word "Zhang Gui" has now been replaced by "Zhang Gui". Jade has become mud and water, which means that her original fate will be a little bitter, but if she works hard, water can become jade and she can live a rich life soon after marriage.
Don't be ridiculous, signatures are always changeable.