What do the cultural connotation and performance characteristics of auspicious cases mean respectively?

"Auspicious" in China traditional culture is a well-known and favorite word, which often symbolizes people's good prayers, good expectations and good wishes and brings people hope and happiness. Therefore, in the traditional culture of China, auspicious words and couplets are particularly rich. But the most prominent is the auspicious patterns of various graphics and signs. As a literary expression in China's historical and cultural tradition, auspicious patterns are closely related to people's life, customs and cultural background. Its origin can be traced back to tribal totems in primitive society and decorative patterns on some utensils at that time. With the development of social culture, some decorative patterns are gradually improved, which constitute signs or symbols with certain meanings, and produce corresponding fixed expressions, thus producing auspicious patterns.