The Chaos Demon Star is terrifying and difficult to deal with. It represents the techniques of the Immortal World's Demon Emperor, something that nobody in the Cultivation World can resist.
However, if it were just a single Chaos Demon Star, it wouldn't be utterly disastrous.
After all, it is a dormant entity. Even if it could ultimately destroy the Cultivation World, it would take thousands of years to do so.
Whether it is Wei Cheng or the Heavenly Demon Chi Li, both have more than enough time to seek solutions and countermeasures.
But the presence of a Chaos Demon Monarch who can control the Chaos Demon Star makes the situation terrifyingly severe.
It is for this reason that Wei Cheng and Chi Li have chosen to collaborate without any prior consultation.
Unless the Chaos Demon Monarch is eliminated, all else is irrelevant.
