The Dark Demon Body was profoundly mysterious. Strictly speaking, it was not the same type of body-tempering method as the Nine Revolutions Golden Body and the Golden Battle Body. This body-tempering method had only three levels. The first level was quite ordinary; at the second level, an extra pair of wings would grow from one's back; at the third level, another pair would grow. This was why the Six-Winged Supreme had three pairs of wings on her back—she had cultivated the Dark Demon Body to the third level.
Once the Dark Demon Body reached great mastery, one's speed would become unimaginably fast. The three pairs of wings on one's back inherently contained the power of space-time.
It had taken Murong Qingcheng three thousand years to cultivate the Dark Demon Body to the second level, gaining an extra pair of wings on her back. As for the third level, without a fortuitous opportunity, she might not be able to break through even in thirty thousand years. This was not something that could be rushed.
Only seven thousand years remained until entering the Chaos Battlefield. Both the Human Alliance and the Demonic Alliance had gained quite a few Supremes. Aside from Xu Jing and Murong Qingcheng, more than a dozen people in the Human Alliance had advanced to Supreme, including Tantai Mingyue, the Golden Robe Emperor, the Azure Robe Emperor, and others. In fact, Xu Jing and Murong Qingcheng had become Supremes later than they had.
However, in terms of progress, these people naturally could not compare to Xu Jing and Murong Qingcheng.
After all, Ye Chen stood behind them. Back then, Ye Chen had gained immensely from Blackwind Canyon, obtaining the knowledge of countless demons. It was no exaggeration to say that this was even more useful than obtaining the inheritance