How to mistake the "big needle" in Neijing for "fire needle"?

Big needle is a kind of ancient nine needles. The needle body is thick and the tip is slightly round. It is often used to treat systemic edema and abdominal abscess. Fire needle is a traditional external treatment method of traditional Chinese medicine. The red-hot needle is quickly pierced into the body surface and its warm stimulation is used to treat diseases.

Big needle, ① one of nine needles. The needle body is thick and long, slightly round. "On the Nine Needles of Lingshu": "The big needle is Feng Yuzhen, with a small front and a length of four inches. The Lord takes the atmosphere and leaves no joints. " 2 refers to the fire needle. Acupuncture and moxibustion set English: "Fire needle can be used with fire, that is, nine needles are big needles." Acupuncture Dacheng is also called burning needle.