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(Zhang Jingyue) Treats insufficiency of true yin and kidney water, which fails to nourish Ying (Nutritive Qi) and Wei (Defensive Qi), gradually leading to physical decline. Symptoms may include alternating deficiency-heat, spontaneous sweating, or night sweats. It addresses restless spirit and blood failing to return to its source, enuresis or incontinence, dry mouth and tongue, soreness and weakness of the lower back and legs, dizziness, blurred vision, and deafness. For all such syndromes characterized by internal depletion of essence and marrow, and exhaustion of body fluids, it is appropriate to rapidly tonify the "Master of Water" (Kidney Yin) to cultivate the primordial yin of the left kidney, thereby naturally replenishing essence and blood. This formula is indicated for these conditions.
Da Huai Shu Di Huang (Prepared Rehmannia Root, 8 liang) Shan Yao (Chinese Yam) Yu Rou (Cornus Fruit) Gou Qi Zi (Goji Berry) Tu Si Zi (Cuscuta Seed, processed) Lu Jiao Jiao (Deer Antler Glue, crushed and stir-fried into beads, 4 liang) Niu Xi (Achyranthes Root, washed with wine and steamed).
[Note: The original text contains fragmented annotations regarding modifications such as adding Nu Zhen Zi, handling constipation, etc., which are incomplete in the source.]

(Zhang Jingyue) Treats dried-up kidney water where deficient fire steams upward to affect the spleen and stomach, causing deficiency of the Yin earth, resulting in loss of appetite and dry, hard stools. In severe cases, it may lead to obstruction of the three Yang meridians and impending development of Ye Ge (Dysphagia/Regurgitation). If treated early, recovery is assured. I have previously used this formula combined with Dang Gui (Angelica Sinensis) and Bai Shao (White Peony Root) to treat Shang Han (Cold Damage) presenting with black tongue, scorched lips, and intense thirst with desire to drink. This condition arises from excessive use of purgative and cold-cooling medicines; this formula serves to rescue the patient. For malaria accompanied by dryness syndromes, where heat is heavy and chills are light, this formula is even more suitable.
Shu Di Huang (Prepared Rehmannia Root, 3-4 qian, or increased to 1-2 liang) Shan Yao (Chinese Yam) Gan Gou Qi (Sweet Goji Berry, 2 qian) Fu Ling (Poria, 1.5 qian) Zhi Gan Cao (Honey-fried Licorice Root, 1 qian) Yu Rou (Cornus Fruit, 1-2 qian; use less if sensitive to sour taste). Modifications: Add Mai Dong (Ophiopogon Tuber, 2 qian) for lung heat with irritability; add Dan Pi (Moutan Cortex, 2 qian) for blood stasis; add Yuan Shen (Scrophularia Root, 2 qian) for heart heat with restlessness; add Sheng Di Huang (Raw Rehmannia Root, 3-4 qian) for reckless movement due to blood heat; add Nu Zhen Zi (Ligustrum Fruit, 2 qian) for yin deficiency with unrest; add Niu Xi (Achyranthes Root) for upper excess and lower deficiency... [text cuts off]; add Gu Pi (Phellodendron Bark, 2 qian) for [specific symptom]. This is a primary formula for strengthening water (tonifying yin) and serves as the main basis for Yi Yin Jian (One-Yin Decoction) and Si Yin Jian (Four-Yin Decoction). (Commentary: Liu Wei Di Huang Wan is suitable for deficiency complicated by damp-heat and stagnation. For pure deficiency without pathogenic factors, the draining action of Ze Xie and the cooling nature of Dan Pi are unnecessary; instead, this sweet and pure formula should be used for gentle tonification.)