| Four Seas | Points of the Four Seas | Comments |
| Sea of Qi |
Renying ST-9 Shanzhong Ren-17 Yamen Du-15 Dazhui Du-14 |
Ling Shu says: When the Sea of Qi is in excess there is fullness in the chest, urgent breathing and a red complexion. When the Sea of Qi is insufficient, there is scanty energy, insufficient for speech. |
| Sea of Blood |
Dazhu BL-11 Shangjuxu ST-37 Xiajuxu ST-39 |
Ling Shu says: The Penetrating vessel is the sea of the twelve channels. In the upper it is conveyed to Dazhui BL-11, and in the lower it emerges at both the Shangjuxu ST-37 and Xiajuxu ST-39. When the Sea of Blood is in excess, then one has a sensation of the body being big, one feels disquiet, but does not know what the illness is. When the Sea of Blood is insufficient, one has the sensation of one’s body being small, one feels reduced but does not know what the illness is. |
| Sea of Water and Grain |
Qichong ST-30 Zusanli ST-36 |
Ling Shu: When the Sea of Water and Grain is in Excess, there is abdominal fullness, and when it is Deficient, there is hunger with inability to eat. |
| Sea of Marrow |
Baihui Du-20 Fengfu Du-16 |
Ling Shu: When the Sea of Marrow is in Excess, there is lightness of the body and much strength, and a person’s feeling of ‘self’ exceeds the normal level. When the Sea of Marrow is insufficient, there is a whirling sensation of the brain, dizziness, tinnitus, pain of the lower legs, impairment of vision, indolence and desire to sleep. |
