This Chapter is an excerpt from the Yellow Emperor's Classic of Internal Medicine, specifically Chapter 41, focusing on acupuncture treatment for lower back pain. The dialogue between the Yellow Emperor and Qi Bo details various types of lower back pain, each associated with a specific meridian in traditional Chinese medicine. For each meridian-related pain, the text specifies acupuncture points, techniques (including bloodletting), and seasonal considerations. The text also provides instructions for related symptoms like constipation and abdominal fullness. Finally, it concludes with additional advice regarding needle application and directional treatment.