Work hard, be diligent and honest, and benefit the people. Yam is regarded as the representative of the traditional honest and thrifty culture in China and a symbol of honesty. In Chinese, yam means deep cultivation, diligence and honesty, and benefiting the people. Officials in the Qing Dynasty often used yam to represent the spirit of honesty, and placed potted yam in their offices to remind themselves of the importance of honesty. Yam not only means honesty, but also has rich nutrition and many functions. Yam is rich in nutrients such as starch, glucose, protein, vitamin C, minerals, etc. It has the functions of invigorating qi, solidifying essence, moistening dryness, invigorating spleen and nourishing stomach.