The craftsmanship of the ancients' mechanical techniques was so magical, Ye Fan did not want to miss this excellent learning opportunity. Of course, understanding the principles was beyond his current abilities, but Ye Fan could fully use his Divine Sense to observe, relying on his powerful memory to deeply imprint the observed mechanical techniques into his mind, never knowing when they might come in handy.
Ye Fan concentrated his spirit and entered a state of self-forgetfulness as he carefully observed the operation of the mechanical techniques within the door lock. Suddenly, he discovered that the mechanical techniques were linked to the outside, extending from underground all the way out. Following the thread, Ye Fan's gaze finally landed on where the Hundred-Legged Dragon was positioned.