953). This source also recommends the "method of the drum and of effort" (gunu zhi fa 鼓努之法) xingqi breath circulation for creating a Sacred Embryo. At the times when you are guiding the Breath, beat the drum [a technical term meaning "grit the teeth"] and perform ten swallowings, twenty swallowings, so that your intestines are filled. After that concentrate upon guiding (the Breath) and making it penetrate into the four limbs. When you are practicing this method, guide the Breath once for each time you swallow. The hands and feet should be supported on things; wait until the Breath has penetrated, and then the heart must be emptied and the body forgotten; and thereupon the hot breath [fanzheng zhi qi 煩蒸之氣] will be dispersed throughout the four limbs; the breath of the Essential Flower [jinghua zhi qi 精華之氣], being coagulated, will return to the Ocean of Breath [qihai 氣海]. After some time, the Embryo will be completed spontaneously. By holding the joints of the members firm, you can succeed in having (the Breaths) answer one another with the sound of thunder; the drum resounds in the belly so that the Breaths are harmonized. "(tr. Maspero 1981: 481) Li Fengshi's (李奉時) c. 780 Songshan Taiwu Xiansheng Qi Jing (嵩山太無先生氣經, Mr. Grand-Nothingness of Song Mountain's Scripture on Breath) discusses how one's yi (意, "intention; will") plays a major role in circulating breath (Despeux 2008: 1108). For instance, using biqi breath-holding to heal oneself. If suddenly there is discomfort in cultivating and nourishing (the breath) or occasionally there is some kind of illness, go into a secluded room and follow this method: spread out your hands and feet, then harmonize the breath and swallow it down (guiding it in your thoughts) to where the trouble is. Shut off the breath. Use the will and the mind to regulate the breath in order to attack the ailment. When the breath has been retained to the extreme, exhale it. Then swallow it again. If the breathing is rapid, stop. If the breath is harmonious, work on the ailment again. … Even if the ailment is in your head, face, hands or feet, wherever it is, work on it. There is nothing that will not be cured. Note that when the mind wills the breath into the limbs, it works like magic, its effects are indescribable. (tr. Huang 1988: 22) The Xingqijue (行氣訣, Secret of Guiding