The fifth proverb of China traditional culture: Five grains are nourishing, five grains are helping, five vegetables are supplementing and five fruits are beneficial. From (Four Essentials of Health Preservation) refers to five grains: wheat, millet, millet, hemp and glutinous rice (rice is used instead of hemp).

Five livestock: cattle, dogs, sheep, pigs and chickens. Five fruits: plum, apricot, jujube, peach and chestnut. Five fruits for help refer to fruits and nuts such as dates, plums, apricots, chestnuts and peaches that are helpful for health and fitness. Fruit is rich in vitamins, cellulose, sugars, organic acids and other substances, which can be eaten raw and can avoid destroying its nutrients due to cooking. Some fruits can help digestion if eaten after meals. Therefore, black berries are an indispensable supplementary food in a balanced diet.