C529 Deep confusion

His father quickly stopped blinking and looked at the rooftop as he said calmly, "We've entered the sand."

I almost laughed out loud. Can Level 5 Cultivator's eyes go into the sand? Isn't this excuse too lousy? Her mother glanced at her father, then looked at Ning Rou. "See Ning Rou? When a man lies, his face doesn't turn red, so you definitely can't easily believe what he's saying