"I don't see anything abnormal," Zhao Yuansi said, looking at the area at the end of the tunnel, which was illuminated by their lights.
"Your eyes probably can't see it," Old Zhou said in a low voice, his gaze fixed on the magnetic needle of his Compass. "You all wait here while I figure this out."
At that moment, the needle was no longer pointing in one direction; it was spinning uncontrollably. This meant the force field here was in complete chaos. It was the first time he had ever encountered such a situation. With the needle malfunctioning, he was momentarily at a loss. Where should he even begin to look for the source of the problem? Every stone, every clump of dirt, even every pothole... any of them could be the origin of the anomaly.
"Take a look over here," Su Xuan said, walking toward the tunnel wall.
The engineers quickly aimed their lights over, illuminating a crack just wide enough for a person to squeeze through sideways.
"Huh?"
