In Xie Xuan's room, the sun turned into tiny spots of light, shining on the simple bed. Xie Xuan sat on the bed with his knees crossed, his heart facing up to the sky, his chest slightly undulating, forming a mysterious law between exhaling and inhaling.

every time you breathe, the real Qi in your body will rush up like the Yangtze River. You can walk along a specific meridian line without stopping. You can warm up the viscera and skeletal muscles that the meridians pass through. The body gradually becomes stronger and stronger in the movement of Qi.

from the first to the third level of martial arts, what...