Who can say what couplets mean? . .

Hello! The following is my understanding of this problem: couplets are a literary style that emphasizes antithesis, levelness and number of words. They originated from poetry and are generally endowed with profound meanings, implying people's various beliefs and expectations about life. It can be divided into Spring Festival couplets, funeral couplets and wedding couplets. Since ancient times, literati have regarded couplets as treasures, and correspondingly, couplets have become a pastime and entertainment. The main selection of lamentation has a long history and is profound. Non-replication. Oh, oh! I hope it helps you.