The twelve meridians each branch out collateral vessels in the limbs, and there is a luo-connecting point that communicates the connection between the exterior and interior meridians; in the trunk, there is also the conception vessel (CV) collateral (Jiuwei (CV15)) scattered in the abdomen, the governor vessel (GV) collateral (Changqiang (GV1)) scattered on the head, and the great collateral of the spleen (Dabao (SP21)) distributed on the flanks. The luo-connecting point can treat diseases of the exterior and interior meridians and related areas. Yuan Dynasty Dou MoZhenjing Zhinan said: "The luo-connecting point is right between the two meridians... If you puncture the luo-connecting point, you treat both the exterior and interior simultaneously."
Table: Hand luo-connecting point table
| Yin meridian and collateral (interior) | luo-connecting point | Yang meridian and collateral (exterior) | |
|---|---|---|---|
| Hand taiyin | Lieque (LU7) | Pianli (LI6) | Hand yangming |
| Hand jueyin | Neiguan (PC6) | Waiguan (TE5) | Hand shaoyang |
| Hand shaoyin | Tongli (HT5) | Zhizheng (SI7) | Hand taiyang |
Table: Foot luo-connecting point table
| Yin meridian and collateral (interior) | luo-connecting point | Yang meridian and collateral (exterior) | |
|---|---|---|---|
| Foot taiyin | Gongsun (SP4) | Fenglong (ST40) | Foot yangming |
| Foot jueyin | Ligou (LR5) | Guangming (GB37) | Foot shaoyang |
| Foot shaoyin | Dazhong (KI4) | Feiyang (BL58) | Foot taiyang |
Table: Trunk luo-connecting point table
| Location | Collateral Name | Point Name | Collateral Vessel Distribution |
|---|---|---|---|
| Front of the body | Conception vessel (CV) collateral | Jiuwei (CV15) | Scattered in the abdomen |
| Back of the body | Governor vessel (GV) collateral | Changqiang (GV1) | Scattered on the head |
| Side of the body | Great collateral of the spleen | Dabao (SP21) | Distributed on the flanks |