What is the meaning of the four-color ceremony in Linqing wedding custom?

You need to bring chicken, duck, fish, tobacco, alcohol, sugar and tea, which are called "four-color gifts";

Green family:

The parents of both men and women are called in-laws, and the in-laws must be within the month of marriage. The best day is double ninth or single ninth, which means "long" for two relatives. If you get married on the 26th of the second half of the month, you must see your in-laws within seven days, but five days of ancestor worship is forbidden. The woman's parents choose an auspicious day and bring a four-color gift to visit the man's parents, but the gift must have chicken and fish, which is more auspicious than wealth. The man's family was treated with dignity.