Heart qi reach small intestine from meridians and vessels and transfers from pinkie and collaterals of Pianli (LI 6) and Tongli (HT5) acupoints along heart meridian to small intestine meridian then to small intestine. Small intestine transfers qi to heart and forms circulation route. Divergent collateral of heart meridian connects small intestine meridian at side of throat and forms circulation route from hands to head, this route is not distributed over other viscera and bowels.

Function of heart which includes brain and heart is blood circulation system. Function of small intestine is absorption of food nutrient. Combination of two qi can transmit nutrient which is absorbed from blood to the whole body, qi of two meridians participates and receives qi of general circulation. Heart meridian receives qi that transfers from spleen meridian and transfers to small intestine meridian then to bladder meridian. Qi of general circulation plays the role of coordination in heart qi and small intestine qi.