Three hundred years earlier, Taoism's disciples had split over their differing interpretations of the "Tao," dividing into the Heaven and Humanity Sects. Their struggles had continued ever since, and they had sworn the so-called five-year pact of "Heaven and Humanity's appointment, swords judged at Miaotai." The affair had also become a favorite topic of idle conversation among the Hundred Schools of Thought.
Meanwhile, the Yin-Yang School, the junior offshoot that had broken away from Taoism five hundred years earlier, had successfully latched onto Qin. Like a mistress who had displaced the rightful wife, it had risen to become Qin's foremost religious order and developed into the largest, strongest school among the Hundred Schools of Thought. Although the other schools scorned and mocked it for relying on the court's support, they could not deny that its power stood above virtually every school except Taoism.
The Heavenly Sect held that fate rested with Heaven, that Heaven's mandate could not be defied, and that one should submit to it. The Earth Sect believed that Heaven and Earth were impartial, that all living beings were equal, and that one could defy Heaven and change one's fate. Their interpretations of the "Tao" contradicted each other, and neither could persuade the other. As time passed, they had split into the Heaven and Humanity Sects, and relations between the Heavenly Sect and the Earth Sect remained cold and deadlocked to this day.
Although Ye Uchiha did not care about the ideological "Tao" of the Heaven and Humanity Sects-and in some respects actually leaned more toward the Earth Sect's beliefs-as a member of the Heavenly Sect, he felt he had to stand firmly behind his own sect. Otherwise, his senior brother Chisongzi would give him a thorough scolding and accuse him of outrageous disloyalty.
As the final disciple