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Heart pain is actually epigastric pain. The Heart, as the Monarch Official (the organ governing vital activities), originally does not receive pathogenic factors. If it receives pathogens and causes pain, this is True Heart Pain (Zhen Xin Tong), where the hands and feet turn cyan up to the joints, and death occurs from morning to evening if onset is in the morning. There are nine types of pain; they should be carefully differentiated before administering medication.

Qi Pain. The pulse is deep and choppy, caused by stagnation of various Qi mechanisms and excessive use of the Seven Emotions (Joy, Anger, Worry, Pensiveness, Grief, Fear, Fright). Er Chen Tang (Two-Aged Decoction) with added Chen Xiang (Aquilaria Wood), Wu Yao (Lindera Root), and Bai He (Lily Bulb) is indicated.
Modified Er Chen Tang
Ban Xia (Pinelliae Rhizoma), Wu Yao (Linderae Radix), Fu Ling (Poria) (each 2 qian), Zhi Gan Cao (Prepared Licorice Root) (0.7 fen), Chen Pi (Citri Reticulatae Pericarpium) (1 qian), Chen Xiang (Aquilariae Lignum Resinatum) (0.5 fen), Bai He (Lilii Bulbus) (5 qian or 1 liang), Sheng Jiang (Fresh Ginger) (3 jin).
Decoct in water and take orally.
Bai He consists of many petals joined together, symbolizing the unity of all vessels. Its white color enters the Lung meridian. The Lung governs Qi; when Lung Qi descends, all Qi becomes harmonious. This is not recorded in medical books; I obtained it from an extraordinary person overseas. It has been repeatedly tested and proven effective. If Chen Xiang is unavailable, substitute with 1 qian of Zi Su Ye (Perillae Folium).

Blood Pain. The pulse is choppy at both superficial and deep levels. The pain feels like stabbing and cannot be pressed or touched. There may be alternating chills and fever, and black stool. Shi Xiao San (Smile-Inducing Powder) is indicated.
Shi Xiao San
Grind into powder and take with vinegar decoction. If accompanied by heat, add Zhi Zi (Gardeniae Fructus) 3 qian and Gao Liang Jiang (Galangal Rhizome) 1 qian, decoct in water and take. If cold, use Rou Gui (Cinnamomi Cortex) 1 qian, decoct in water and take.

Phlegm Pain, also known as Fluid Pain. The pulse is slippery with coughing. The pain wanders without a fixed location. Er Chen Tang with dried Xie Bai (Allii Macrostemonis Bulbus) 5 qian and Gua Lou Pi (Trichosanthis Pericarpium) 2 qian is indicated.

Fire Pain. The pulse is rapid and excess. Symptoms include thirst, red face, body heat, and constipation. The pain comes and goes intermittently. Jin Ling Zi San (Melia Toosendan Powder) is indicated. If fire is excessive, use Zhi Zi (Gardeniae Fructus) 2 qian, Chuan Lian Zi (Toosendan Fructus) pitted, Huang Lian (Coptidis Rhizoma), Liang Jiang (Zingiberis Rhizoma Recens), Ze Xie (Alismatis Rhizoma), Dan Shen (Salviae Miltiorrhizae Radix et Rhizoma) each 1 qian, and Xiang Fu (Cyperi Rhizoma) 1.5 qian. Decoct in water and take orally.
Jin Ling Zi San (See "Contemporary Formulas" for details)

Cold Pain. The pulse is slow, faint, and thin. Hands and feet are cold. The pain is continuous and lingering, relieved by pressing with warm hands. Gui Fu Li Zhong Tang (Cinnamon and Aconite Regulate the Middle Decoction) with Dang Gui (Angelicae Sinensis Radix) 2 qian is indicated to supplement its rigidity. Mu Tong (Akebiae Caulis) 1 qian is used to unblock the collaterals. (Pain lasting long enters the collaterals.)

Deficiency Pain, also called Palpitation Pain. The pulse is floating, small, and thin, or deep, short, and choppy. The pain alternates between severe and mild, persisting for many days without healing. Palpitations are present. Massage is highly preferred. Symptoms improve slightly after eating but worsen when hungry. Gui Pi Tang (Restore the Spleen Decoction) with Shi Chang Pu (Acori Tatarinowii Rhizoma) 1 qian and Mu Xiang (Aucklandiae Radix) 0.5 fen is indicated.

Injection Pain (caused by pathogenic invasion). Occurs after entering mountains, forests, ancient temples, or tombs, or after exposure to abnormal qi. The patient speaks confusedly. The pulse fluctuates between large and small; the pulses on the left and right wrists seem to come from two different people. Ping Wei San (Peaceful Stomach Powder) with Huo Xiang (Agastaches Herba) 2 qian and a small amount of She Xiang (Moschus) is indicated.

Worm Pain. The pulse resembles that of a healthy person. The pain comes and goes suddenly. It worsens upon smelling rich, sweet, or fatty foods. (Upon smelling food, the worms raise their heads.) Massage provides slight relief. (The worms hide temporarily due to fear.) Lips are red, and there are white flower-like spots on the tongue. For those in their prime, Jing Yue Sao Chong Jian (Jing Yue's Worm-Sweeping Decoction) is indicated. For the weak, Li Zhong Tang (Regulate the Middle Decoction) without Gan Cao (Licorice Root), plus Mei Zi (Mume Fructus) 2 pieces, Hua Jiao (Zanthoxyli Pericarpium) 1.5 qian, Wu Zhu Yu (Evodiae Fructus), Huang Lian (Coptidis Rhizoma), Rou Gui (Cinnamomi Cortex) each 1 qian, and Dang Gui (Angelicae Sinensis Radix) 2 qian is indicated.

Food Pain. Caused by food accumulation and stagnation. Symptoms include belching with rotten odor, acid regurgitation, aversion to food, and abdominal fullness. The pain may feel like something lifting up. The pulse is excess and slippery, especially at the Right Guan position. Ping Wei San with Shan Zha (Crataegi Fructus), Mai Ya (Hordei Fructus Germinatus), and Ban Xia (Pinelliae Rhizoma) each 2 qian is indicated. If distension is severe, add raw-ground Lai Fu Zi (Radish Seed) 1 qian. Decoct in water and take orally. If the disease is new and food remains in the stomach, after taking this decoction, induce vomiting by probing the throat with fingers.