C32 I Know This Thing like the Back of My Hand!

A vast space had been excavated underground, brightly lit and as spacious and temperate as the surface world. Xiao Qianxue led Chu Xuan through several layers of security checkpoints, where their identities were verified before they could smoothly proceed into the inner area.

As they walked, an overwhelming roar of water echoed from ahead. A chasm stretched out before them