Lucky Prairie refers to the four-leaf sorrel, the English name is Wood-sorrel. The sorrel that can be seen everywhere is mostly three-leaf, and the four-leaf is a mutant species. It is said that if you can find a four-leaf sorrel, it is the most Lucky people get the happiness they want. With the evolution of time and space, clover has become synonymous with sorrel, as the best medium for people to find happiness and deliver blessings.