The first path of martial arts is divided into three realms: skin training, bone forging, and tendon conditioning, with a total of nine levels. The lower third level is for skin training, the middle third level is for bone training, and the upper third level is for muscle strengthening.
If you want to live forever, you have to go beyond the ninth level and reach that illusory land that only exists in legends... The secret realm of land gods!
"Only when you jump out of the three realms can you become a land god."