Fear leads people to self-enclose.
When Shen Yue heard the concept of "lockdown of time-space," he was first astonished, then quickly drew a conclusion from human nature.
"You are very afraid of being pursued by superbody mutants." Shen Yue slowly said, "You think that the superbody mutants will not spare you."
Xiao Chu sighed lightly, "Indeed, we are very scared."
Acknowledging one's cowardice also requires courage.
Seeing Xiao Chu's honest fear, Shen Yue instead encouraged, "But your method seems to have worked." He then thought of something, "Because you have locked down the time-space you're in, the historical changes within this scope will not affect the subsequent eras."
He finally understood why Nuanyu couldn't detect any changes in history.
Xiao Chu murmured, "You are understanding more and more."