If this was all part of Ji Lutian's plan, there would probably be some danger in Yuheng Valley.
Zhou Shu was extremely vigilant as he followed Demon King Ao, Tiangou, and the real Liu'Er to approach Yuheng Valley.
At the mouth of the valley was a narrow mountain path that looked like a thin line in the sky. It was several kilometers long. Looking inside, one could vaguely see bending light, making one's mind immersed.
Demon King Ao, Tiangou, and the real Liu'Er stopped at the same time. Zhou Shu also stopped.
"Mr. Ji, go in and start forging. We'll wait for you here," Tiangou said. "Yao Wenxin will stay here. We'll give you a day. Is that enough?"
One day outside the valley was one year inside. Ji Lutian had previously said that it would only take six months to forge the Demon Mirror. In this year, even if he forged twice, there was enough time.
As for Yao Wenxin staying here, it was obvious that she was being taken hostage.