ancient allegorical patterns. "Five grains" refers to five kinds of grains. In ancient times, there were different opinions, some of which were rice, millet, millet, wheat and glutinous rice; Some say rice, millet, wheat, beans and hemp. In short, it refers to several major crops. "Fengdeng" means a bumper year. Bai Juyi's poem: "Yi Xun Liang Hua, thanks to this lucky year." I wish a bumper harvest in agriculture to show people's good wishes in life.