Kidney-strengthening and kidney-strengthening are two concepts. Kidney-strengthening refers to kidney-strengthening and water-cultivating essence, which is equivalent to nourishing yin and nourishing essence. While strengthening the body refers to invigorating qi and blood and strengthening vitality. Generally, the means of strengthening the body is to regulate the body's yin and yang and five elements through invigorating qi and blood, so as to achieve the purpose of harmonizing the five qi and relaxing the harmony between yin and yang, while strengthening the kidney is to strengthen the kidney and replenish the essence through exercise and nourishing.