C2175 Bedevilment

Seven days later?

Xiao Qianhan saw Lang Qintian's movements, and frowned: "How do you calculate the time?"

This time, Lang Qintian did not refuse his answer, "This scroll is very special, it will change every few hours. Once a change occurred and the passage was not completed, the change would lead to the failure of the entire process! And there was no pattern to this change! However