According to LingShu33 Chong Mai sea of 12 meridians has its
Shu points above Bl11 and below it leaves (and this is the bit I would like you to clarify please) at the upper and lower face of the great void (ST 37 and ST 39). Are these 2 points the sea of blood’s boundaries?, and why is it referred to as a great void, is it a second home for shen (living in Blood void ie unfathomable void of a sea, like resting at ease in this as a second home as apposed to its primary home in the void of the heart. I’m just playing with this as an idea. It is probably nonsense. Please illuminate.
The Sea of blood points (BL11 – St37 – St39) are described in the LingShu in relation to specific symptoms:
- In excess: a sensation as if the body is big; one feels disquiet, the illness is not definable.
- In deficiency: one has the sensation of one’s body being small; one feels reduced, the illness is not definable.
Some authors stressed that such indications are not found in later discussions of these three points. As you know, the terms “Entry” and “Exit” refer to the relative position of the points on the body (the higher points being “Entry”). I would not see them as places where you can enter/exit the sea but rather as the limits of the sea itself. If you compare the limits of the sea of blood with the limits of the other seas and you will see that the compiler of the neijing are describing specific physical entities (brain. chest, blood vessels and intestines) Also keep in mind that Seas do not move and act as reservoirs affecting the movement and the behaviour of the rivers.
Please note that there are many practitioners that would not use St37, 39 to nourish Blood but more as lower he sea points of Colon and Small Intestine to treat several digestive . There is more consensudisorderss about the action of BL11 in moving Blood (Note that BL11 is the Shu/Hui point of Bones).
I think that the book “grasping the wind” is the best answer to your second question regarding the name of these points.