Duck's moral and symbol is the first in the imperial examination. "A" and "duck" are homophonic, so duck symbolizes the first place in the imperial examination, which means that you hope to have great prospects and succeed in your studies. The first place in A is the champion, the second is the champion, and the third is the champion. The auspicious picture of duck pattern with the theme of "one for one" wishes others to win the first place in the college entrance examination. Duck is the general name of waterfowl in the subfamily Duckinae, or real duck. Ducks are smaller, with short necks, and some genera have bigger mouths. Ducks can be divided into meat ducks and egg ducks. Abby Mallard for eggs is small, slender, with tight feathers and flexible movements. The eggs are big, but small. Representative ones are Shaoxing duck, Jinding duck and Gaoyou duck. Meat ducks are relatively large, generous, docile and delicious, represented by Beijing Duck, French Muscovy Duck and White Star Duck. French Muscovy Duck and Australian White Star Duck have good quality, strong disease resistance, good meat quality and high lean meat rate. In ancient times, "duck" and "A" were homophonic, so "duck" implied "A" in the imperial examination, which implied wishing a bright future and successful studies. Folklore also tells that ducks or crabs are given to travelers for a bright future.