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Answer: Qi belongs to Yang, and Blood belongs to Yin. When Yin is excessive, Yang becomes deficient; when Yang is excessive, Yin becomes deficient. As stated in the *Classic of Internal Medicine* (Huangdi Neijing), "When Yang prevails, Yin suffers disease; when Yin prevails, Yang suffers disease."

Various forms of hematemesis (vomiting blood) and epistaxis (nosebleed) arise from an excess of Yang, which injures Yin, causing Blood to deviate from its normal pathways. It may exit from the mouth or from the nose, all referred to as "reckless movement" (blood flowing outside its normal channels). A pulse that is flooding and rapid indicates a unfavorable prognosis (ni), whereas a pulse that is fine and weak indicates a favorable prognosis (shun). The Stomach Meridian of Foot-Yangming connects with the cheeks and jaw. When this meridian is invaded by pathogenic factors, hot blood oozes from the teeth. The Spleen's qi opens into the mouth, and the Heart's qi opens into the tongue. When the Heart and Spleen meridians are injured, blood exits from the tongue. Ying Blood (nutritive blood) internally connects with the Zang-Fu organs and externally winds around the meridians. When stored, it resides in the Liver Meridian; when circulating, it emerges from the Heart. Furthermore, the fluid of the Heart is sweat. If both the Liver and Heart viscera are deficient, Blood will be discharged along with sweat.

Neibu Xionggui Tang (Internal Supplementing Ligusticum and Angelica Decoction) treats women with weakened Qi and Blood, or those who have suffered excessive bleeding from metrorrhagia (beng lou) or trauma, resulting in shortness of breath, fatigue, abdominal tension and pain, vexatious heat in the four limbs, pallor of the face and eyes, as well as hemoptysis (spitting blood) and hematemesis.

Ingredients: Chuanxiong Rhizoma (Chuanxiong), Rehmanniae Radix Preparata (Shudi) (each 4 liang); Paeoniae Radix Alba (Baishao) (5 liang); Cinnamomi Cortex (Guixin) (2 liang); Glycyrrhizae Radix et Rhizoma (Gancao), Zingiberis Rhizoma Recens (Ganjiang) (each 3 liang); Jujubae Fructus (Dazao) (40 pieces); Angelicae Sinensis Radix (Danggui) (2 liang).

Crush the above ingredients into coarse powder. Take 5 qian per dose, add 1.5 zhan of water, decoct until 0.8 zhan remains, strain, and take warm. Time is not restricted.

Roupi Tang (Splea-Softening Decoction) treats hematemesis, hematochezia (blood in stool), and epistaxis.

Ingredients: Paeoniae Radix Alba (Baishao), Astragali Radix (Huangqi), Glycyrrhizae Radix et Rhizoma (Gancao) (each 1 liang); Rehmanniae Radix Preparata (Shudi) (3 liang).

Cut the above ingredients into small pieces. Take 3 qian per dose, add 1 zhan of water and 1 zhan of wine, decoct until 0.8 zhan remains, strain, and take orally. Time is not restricted.

Hupo San (Amber Powder) treats hematuria (blood in urine).

Crush the above ingredients into coarse powder. Take 5 qian per dose, add 2 zhan of water, decoct until 1 zhan remains, strain, and take warm.

Answer: Heaven nourishes humans with the Five Qi, and Earth nourishes humans with the Five Flavors, namely Sour, Bitter, Sweet, Acrid, and Salty. Each flavor has its specific entry point: Sour enters the Liver, Acrid enters the Lung, Bitter enters the Heart, Sweet enters the Spleen, and Salty enters the Kidney. This is called the "Five Entries." The Liver stores Blood, and for women, Blood is primary. Therefore, a preference for sour foods occurs because Sour enters the Liver and nourishes Blood. With the aid of sour substances, Blood can reside and be stored properly. Blood deficiency often generates internal heat, and pathogenic heat accumulates in the Upper Jiao, causing internal vexation. Due to deficiency-vexation, women often crave cold foods.

Fuling Banxia Tang (Poria and Pinellia Decoction) treats nausea and vomiting during pregnancy (egzu), mental restlessness, vomiting, and aversion to nausea, with a craving for salty and sour foods.

Ingredients: Inulae Flos (Xuanjinhua), Citri Reticulatae Pericarpium (Chenpi), Platycodonis Radix (Jiegeng), Paeoniae Radix Alba (Baishao), Ginseng Radix et Rhizoma (Renshen), Glycyrrhizae Radix et Rhizoma Praeparata cum Melle (Zhi Gancao), Chuanxiong Rhizoma (Chuanxiong) (each 0.5 liang); Polyporus (Chifuling) (3 fen); Rehmanniae Radix Preparata (Dry Shudi), Pinelliae Rhizoma Praeparatum (Banxia) (washed ten times in boiling water, 1 liang 1 fen).

Crush the above ingredients into coarse powder. Take 2 qian per dose, add 1.5 zhan of water and 4 slices of fresh ginger, decoct until 0.8 zhan remains, strain, and take slightly warm before meals.

Qingping Tang (Clear and Peaceful Decoction) treats dry mouth and throat due to Blood deficiency, accompanied by a desire to drink.

Ingredients: Ginseng Radix et Rhizoma (Renshen), Pinelliae Rhizoma Praeparatum (Banxia), Ophiopogonis Radix (Maimendong), Paeoniae Radix (Shaoyao), Atractylodis Macrocephalae Rhizoma (Baizhu), Glycyrrhizae Radix et Rhizoma (Gancao), Angelicae Sinensis Radix (Danggui), Polyporus (Fuling), Bupleuri Radix (Chaihu) (equal parts).

Cut the above ingredients into small pieces. Take 2 qian per dose, add 1.5 zhan of water, one piece of roasted fresh ginger (broken), and a small amount of Mentha Haplocalyx (Bohe). Decoct together until 0.7 zhan remains, strain, and take hot. Time is not restricted.