Second, concepts of the same level have a "home-field and precedence advantage."
In the same material universe or high-dimensional space-time, if a concept of the same level has already taken effect, then defying this concept requires the use of a higher-level concept to forcibly offset and erase it; concepts of the same level cannot contravene an already activated concept.
One of the concepts in this cabin is undoubtedly "No harm can come to anything in the cabin." Lu Yuanming himself is of a common level concept, and he cannot contravene this preemptive concept as it would create a paradox.
Lu Yuanming absolutely cannot destroy the cabin from within, and when he tries to leave the cabin, he discovers the second concept of the cabin: "maze."
The whole cabin seems small, but as he moves, he mysteriously ends up in different parts of the cabin.