Le chapitre 18 du Ling Shu dit : « Ying Qi vient du foyer moyen ; Wei Qi vient du foyer inférieur ». Cela peut surprendre certains, car nous avons l’habitude de penser que le Wei Qi est associé aux poumons et donc au foyer supérieur, ce qui est le cas. Cependant, il est dit que le Wei Qi provient du foyer inférieur parce qu’il est associé aux reins, et au Yang. Bien sûr, il est également vrai que le Wei Qi est diffusé dans le foyer supérieur par les poumons, mais son origine est dans le foyer inférieur.
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Chapter 18 of the Ling Shu says: “Ying Qi comes from the Middle Burner; Wei Qi comes from the Lower Burner.” This may come as a surprise to some as we are used to think of the Wei Qi being associated with the Lungs and therefore the Upper Burner, which it is. However, it is said that the Wei Qi comes from the Lower Burner because it is associated with Kidney-Yang. Of course, it is also true that the Wei Qi is diffused in the Upper Burner by the Lungs, but its origin is in the Lower Burner.