It wasn't that he didn't want to flee, but that he couldn't escape, nor was there any point in escaping.
Chen Mu had displayed a terrifying strength, identical to the reputation of a "Qiankun Grandmaster" as per the rumors, which stated, "Where Qiankun arises, invincibility ensues in the present world." Among Grandmasters, only those of the Qiankun lineage dared to claim invincibility.
Chen Mu, having cultivated the Qiankun Martial Body and mastered the Qiankun Domain, could be said to have reached the pinnacle of the Marrow Cleansing Realm, arriving at the very limit of the Grandmaster Realm. Even those exceptional Grandmasters ranked in the top ten of the world's Grandmasters list were likely no match for Chen Mu, and even the first-ranked "King of Jin," Ji Xuanchu, would probably not be able to defeat him now.