Chapter 622: The Mysteries of the Spiritual Sutra

Bone marrow is responsible for blood production, while the spinal cord serves as the nerve passageway. The most crucial part is the spinal cord, particularly the Great Vertebra at the back, known in martial arts as the "Great Dragon." (Note: In martial arts, the "Great Dragon" symbolizes strength and vitality, emphasizing its importance in energy cultivation.) When Apep Marks channeled his inner strength into the Great Vertebra, he discovered two meridians within—one yin and one yang—reminiscent...