C579 Imperial Tomb

Feng Yi dove into the narrow gap, just a few inches wide, and as soon as he stood still, he noticed that the opening closed instantly, leaving the entrance looking as good as new.

"Wow, it's been ages, and this barrier is still so formidable, even with a self-repairing feature!" Feng Yi exclaimed, a hint of surprise on his face. His chest heaved as he caught his breath