Huachi, there are two kinds of views, one is the place where saliva is produced under the tongue in the mouth, that is, under the tongue; Another way of saying it is that Huachi is located in the Qi Sea, that is, the upper part of the Qi Sea, which is the same as the position of Zhongshan point in traditional Chinese medicine.

Either way, the nectar (saliva) is swallowed slowly, without persistence.