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The elderly commonly consume this to benefit essence, strengthen the kidneys, improve hearing, and enhance vision.
Take *Euryale Seed* (Jitou Shi) in any quantity, remove the shell, process into pure powder (3 he), and cook with *Oryza Sativa Japonica Group Rice* (Jingmi, 3 he) into porridge according to usual methods. Consume on an empty stomach.

For treating spleen and stomach deficiency in the elderly, commonly used to dispel wind-dampness and strengthen sinews and bones.
Take *Coix Seed* (Yiyiren, 4 liang) and *Oryza Sativa Japonica Group Rice* (Jingmi, 3 he). Cook into porridge according to usual methods. Consume as needed.

For the elderly to tonify the spleen and stomach, nourish the heart and kidneys.
Take *Lotus Seed* (Lianrou, 3 liang, peeled and dehearted, cleaned), *Glutinous Rice* (Nuomi, 2 he), and *Late Rice* (Wanmi, 3 he). Mix evenly, cook into porridge in two batches, and consume on an empty stomach.

To supplement insufficiency of the spleen and stomach in the elderly, characterized by emaciation and fatigue.
Take one *Pig Stomach* (Zhudu, cleaned), *Ginseng Radix et Rhizoma* (Renshen, 5 qian), *Zingiberis Rhizoma Praeparatum* (Ganjiang, 1 qian, processed), *Sichuan Pepper* (Chuanjiao, 1 qian, stir-fried until sweat appears, remove seeds and closed ones), *Scallion White* (Congbai, 5 stalks, remove roots and leaves), and *Oryza Sativa Japonica Group Rice* (Jingmi, 5 he).
Grind the above herbs into powder, mix well with rice, place inside the pig stomach, sew tightly to prevent leakage. Add 5 sheng of water, simmer slowly in a clay pot until extremely soft. Consume on an empty stomach, followed by drinking 3-5 cups of wine.

Use marrow from cooked beef bones (4 liang) and *Walnut Kernel* (Hetaoren, peeled, 2 liang).
Grind these two ingredients into a paste. Consume on an empty stomach with a little salt. This greatly benefits the kidneys, resolves phlegm, and is highly effective.

A song states: Two liang of white salt, four liang of ginger, five jin of stir-fried flour, two parts fennel; half a jin of almonds stir-fried with flour, one liang of honey-processed *Glycyrrhiza Uralensis Root* (Gancao), *Astragali Membranaceus Root* (Huangqi), *Lycium Chinense Fruit* (Gouqizi), *Walnut Kernel* (Hutaorang) [each half a jin], and equal parts of *Sesamum Indicum Seed* (Zhima). This is the best prescription for preserving youth, harmonizing blood, and prolonging life; it is the first among tonic prescriptions.
Grind all ingredients into powder, mix evenly. Take at any time, mixed with boiling water.

Another prescription: For treating spleen deficiency in the elderly or weak appetite and aversion to food after severe illness.
Take five sheng of *Glutinous Rice* (Nuomi), soak for one day and night, drain well, and stir-fry in a pot over slow fire until fragrant and dry, being careful not to burn. Separately, take *Sichuan Pepper* (Chuanjiao, stir-fried until sweat appears, remove seeds and closed ones, net weight 2 liang), *Coix Seed* (Yiyiren, 1 jin), and *Lotus Seed* (Lianrou, 1 jin, peeled and dehearted, stir-fried separately until yellow and cooked). Grind together into powder. Mix with 2 jin of white sugar, store tightly sealed in a porcelain jar. Each morning, take one white cup's worth, mixed with boiling water. It effectively tonifies the stomach and promotes appetite.

Physicians of ancient and modern times have discussed prescriptions in great numbers. Their errors lie in that when numerous, they are miscellaneous and imprecise; when few, they are incomplete and omit details. Readers cannot help but feel regret. In my leisure time, I have perused various books, collected excellent methods for preventive care and verified famous prescriptions, incorporated my own insights, distinguished differences between seasons and regions (North and South), and weighed the appropriateness of severity and urgency. I compiled them into two volumes named *Yangsheng Leyao* (Essentials of Health Preservation), entrusted them to printers for dissemination throughout the world. Perhaps when diseases are about to manifest, one can prevent them before they take shape; or if diseases arise suddenly and doctors are unavailable, following these methods may certainly provide some assistance. If one says the Dao lies herein, how dare I, Lun, claim such credit? I respectfully inform you.