Emperor Jun realized the serious danger in the Human Tribe's Spiritual Inheritance of Martial Arts. The Human Tribe was just born thousands of years ago, but they had already trained lots of Zenith Heaven Golden Immortal Martial Artists. Such potential was really terrifying. Even though the Wu-killing Sword had been cast and Emperor Jun had promised Goddess Nvywa Wa and Laozi not to exterminate the Human Tribe, only when the Spiritual Inheritance of Martial Arts was exterminated would Emperor Jun have felt at ease.
If the Human Tribe continued to develop for thousands of years, there would be more Martial Artists at the Realm of Zenith Heaven Golden Immortal. Since the Demon Tribe had slaughtered billions of people in the Human Tribe, Human and Demon Tribes were absolutely irreconcilable. With the war between the two tribes drawing near, Emperor Jun did not want to see any unexpected accidents on the battlefield.