When the Human Emperor launched the final offensive back then, Xie Mieling had already anticipated that they might fail.
However, having been assigned a mission, he could not retreat. Therefore, when the Human Emperor initiated the final offensive, he sought out the then-insignificant Dun Zhong.
According to his calculations, Dun Zhong would be the one who could help him the most in the Endless. Cooperating with Dun Zhong was safer than collaborating with any other living being. Despite certain risks, he ultimately chose to work with Dun Zhong.
Chapter 2498