Qiao Nian glanced at Gu Zhou's phone and said thoughtfully, "If Qin Chuan discovers that the tunnel has collapsed, he will definitely accelerate. Let's follow a range of six to eight kilometers."
Qiao Nian followed Gu Zhou in the indicated direction. She took out her phone and glanced at the data on the map, then at the black marks on the huge rock. Her expression changed and she quickly walked over. When she smelled the smell, she gasped.
"Ah Zhou, come and take a look." Qiao Nian looked at Gu Zhou not far away and said solemnly.
Gu Zhou walked towards Qiao Nian. When he reached her, he looked in the direction Qiao Nian was pointing and saw the black substance remaining in the cracks on the huge rock.
He walked over with a dark expression. He didn't have to get close to smell the gunpowder. "It's gunpowder!"
