Zhang Chen was definitely not a fool. If he stayed here and split the Dragon Corpse with Xie Xuan and Elder Wu, what would happen to him once the division was over?
When the time comes for the three of them to flee, who do you think Zhang Shicheng would chase?
The two of them had already refined their Yang Gods; their speed was not something he could match, even if he pushed himself to the limit.
At that point, Prince Pingbian would surely choose to chase him first!
If he took Prince Pingbian's soul to scour the Crystal Palace, to see if there was anything left behind, and timed it just right, he could release his hold on Zhang Shicheng. At that time, Zhang Shicheng would certainly be in a rush to save his own body, and he could make his escape in the chaos.
Then what happens next between Zhang Shicheng, Xie Xuan, and Elder Wu would be none of his concern.