《黄帝内经·灵枢·九针论》
所以，为治疗这种疾病，制作了第七种针具一一毫针，要使针头纤细锐利像蚊、虻的嘴。刺治时，进针要平稳而徐缓，而且要留针少时，使正气借此得以充实，经气邪气同时受到了针刺的影响，出针后要较长时间按住针孔，使正气不致外泄。
故为之治针，令尖如蚊虻喙，静以徐往，微以久留，正气因之，真邪俱往，出针而养者也。
Therefore, to treat this disease, the seventh kind of acupuncture needle, the millipede needle, was created. Its tip should be thin and sharp, like the proboscis of a mosquito or gadfly. When puncturing, the needle should be inserted smoothly and slowly. It should not be retained for long, so that the body's positive qi can be replenished. The needle's movement affects both the body's qi and the evil qi. After withdrawing the needle, the puncture site should be pressed for a period of time, to prevent leakage of the body's positive qi.