The marriage of two families with different surnames is a well-known marriage. When peach blossoms are in full bloom, it is suitable for marriage (quoted from the Book of Songs here). It is expected that in the future, children and grandchildren will spread like melons and prosper from generation to generation (see The Book of Songs: Mian). The agreement to grow old together is written on paper, and the poem-like godsend marriage of red leaves is recorded in the mandarin duck spectrum.