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Qibo said: "The Cun (inch) position observes the Upper Jiao, the Guan (bar) position observes the Middle Jiao, and the Chi (cubit) position observes the Lower Jiao." Bian Que said: "The Sanjiao (Triple Burner) is the special envoy of Yuanqi (Original Qi), primarily circulating through the three types of Qi (Zongqi, Yingqi, Weiqi), and traversing the Zang-Fu organs." Hua Yuanhua (Hua Tuo) said: "The Sanjiao (Triple Burner) is the Qi of the Three Origins in the human body, commanding the Qi of the Five Zang and Six Fu organs, Ying-Wei (Nutritive-Defensive) meridians, and the Qi of all internal, external, left, right, upper, and lower regions."

[Commentary] Carefully analyzing these three statements reveals that the Shen (Spirit) within the pulse itself harmonizes with the acquired Guqi (Grain Qi) to circulate throughout the body. Generally, the Shen attaches to the Dongqi (Moving Qi) between the kidneys, emerges from the Lower Jiao (Lower Burner), combines with the essence of food and drink to become Yingqi (Nutritive Qi); ascends to the Middle Jiao (Middle Burner), combines with the fierce Qi of food and drink to become Weiqi (Defensive Qi); ascends to the Upper Jiao (Upper Burner), where Yingqi circulates within the vessels and Weiqi circulates outside the vessels. Its Zongqi (Pectoral Qi) accumulates in the chest, named Qihai (Sea of Qi). Therefore, the Sanjiao (Triple Burner) commands the Qi of the entire body, distributed among the chest, diaphragm, and abdomen, which corresponds to the distribution at the Cun, Guan, and Chi positions, a fact beyond doubt. However, Wang Shuhe (courtesy name Zhongxuan, pseudonym Boren) also perpetuated errors by stating that the Right Chi position is where the "Pericardium Meridian of Hand-Jueyin and Sanjiao Meridian of Hand-Shaoyang originate," which is so inconsistent with ancient texts and unreasonable!

Bian Que said: "When initially holding the pulse, with a pressure equivalent to the weight of three beans, feeling it in harmony with the skin and hair, this is the Lung position; with a pressure equivalent to six beans, feeling it in harmony with the blood vessels, this is the Heart position; with a pressure equivalent to nine beans, feeling it in harmony with the muscles, this is the Spleen position; with a pressure equivalent to twelve beans, feeling it level with the sinews, this is the Liver position; pressing down to the bone, and when lifting the finger, the pulse response is swift and vigorous, this is the Kidney position." (From this, we can deduce that not only do the left and right six positions observe the Zang-Fu organs, but even within the variations of light and heavy pressure under the fingers, one can determine which meridian is diseased. Crude practitioners fail to examine this, focusing solely on dividing the six positions; thus, how could they exhaust the subtleties contained within the pulse!)

Qibo said: "Speaking of human Yin and Yang, the exterior is Yang and the interior is Yin; speaking of the Yin and Yang of the human body, the back is Yang and the abdomen is Yin; speaking of the Yin and Yang within the Zang-Fu organs, the Zang are Yin and the Fu are Yang; the Five Zang organs—Liver, Heart, Spleen, Lung, Kidney—are Yin, while the Six Fu organs—Gallbladder, Stomach, Large Intestine, Small Intestine, Sanjiao (Triple Burner), Bladder—are Yang. Therefore, the back is Yang; among Yang, the Yang within Yang is the Heart; the Yin within Yang is the Lung. The abdomen is Yin; among Yin, the Yin within Yin is the Kidney; the Yang within Yin is the Liver; the Ultimate Yin within Yin is the Spleen. This describes the correspondence between Yin-Yang, interior-exterior, and male-female." (The Heart and Lung both reside in the upper part and belong to Yang, but since the Heart is located in the South, it is the Yang within Yang; since the Lung is located in the West, it is the Yin within Yang. The Kidney and Liver both reside in the lower part and belong to Yin, but since the Kidney is located in the North, it is the Yin within Yin; since the Liver is located in the East, it is the Yang within Yin. Earth of the Spleen has a humble status and belongs to Yin, and as a solitary organ residing internally, it does not govern any specific season but thrives at the end of each of the four seasons, thus it is the Ultimate Yin within Yin.)

Bian Que said: "Exhalation originates from the Heart and Lung; inhalation enters the Kidney and Liver; between exhalation and inhalation, the Spleen receives Grain Qi, and its pulse is in the middle. Floating pulses are Yang, sunken pulses are Yin. Both Heart and Lung pulses are floating; how to distinguish them? Answer: Floating, large, and scattered is the Heart pulse; floating, short, and choppy is the Lung pulse. Both Kidney and Liver pulses are sunken; how to distinguish them? Answer: Firm and long is the Liver pulse; soft upon light lifting and solid upon deep pressing is the Kidney pulse. The Spleen governs the Central Region (Zhongzhou), so its pulse is in the middle; this is the method of Yin and Yang." (Exhalation is Yang, so the pulses of the Heart and Lung are both floating. The Heart is the Yang within Yang, so its pulse is floating, large, and scattered; the Lung is the Yin within Yang, so its pulse is floating and additionally short and choppy. Inhalation is Yin, so the pulses of the Kidney and Liver are both sunken. The Kidney is the Yin within Yin, so its pulse is sunken and solid; the Liver is the Yang within Yin, so its pulse is sunken and additionally long. The Spleen is the Central Region, so it is neither floating nor sunken, but its pulse is in the middle.)