Upon learning that the target of Red Fist Arthur and the Book of Heaven might be Chen Yu,
Li Changhe was engulfed in regret.
He regretted not having killed Red Fist immediately before, which instead had put his friends and family in danger. Chen Yu was targeted by the Book of Heaven solely because it did not want this variable, Li Changhe, to be summoned back.
Now, Li Changhe and the others were in the Endless Void, unable to stop Red Fist or even warn Chen Yu and the others of the impending danger.
This caused Li Changhe a sense of powerlessness.
The Book of Heaven had still anticipated this step; even though he was a variable, he was still attracted by the Teleportation Gate.
If the analysis from the Great Wall wasn't wrong, once Chen Yu initiated a certain recall action, the Different Race Demigods would be alerted and would attack the Border City predicted by the Book of Heaven.