He raised his knife and fork with his hands, then smiled as he gently brought them together with a light clink.

"You're saying planes will collide?" Qin Ye asked.

"No, but they will come into contact with one another," the second King Yanluo replied with a smile. "That's completely different from the mortal realm, right? Due to this difference, I'm willing to bet that the space exploration model of the mortal realm definitely isn't suited to the underworld. I'm sure you must be wondering what this exit of the underworld is supposed to be, right?"

Qin Ye nodded in response. These were all questions that he had wanted to ask earlier, but the rejection of his plan to dabble in space exploration using the technology of the mortal realm had made him forget all about this.

The second King Yanluo smiled as he continued, "When the planar scale reaches 90 degrees, a supercritical tide will be observed, and that is the only way to exit the plane. This happens once every 50 years. Do you still think the technology of the mortal realm is applicable to the underworld now? I'm willing to make a bet with you right now that the only possible way to enable space exploration in the underworld is by relying on Yin energy and Yin runes. In the underworld, only power can oppose power. If the materials of the mortal realm...