In some places, there is a custom that if a family member dies, it will be purple one year later, yellow two years later, green three years later and red four years later.

In some areas, there is a custom of not posting couplets in the Spring Festival three years after the death of the old man, and posting pink couplets in the Spring Festival in the fourth year, indicating the completion of filial piety. Stick pink couplets on the wedding day. I don't feel so good. Of course, it is because of people and places. For example, Hong Kong people still keep to the left, which is contrary to the mainland. Pink stands for romance. Red festival.