One knock was all it took to verify Tsukino Kyoko’s words. The returning sound was solid, indicating the lack of open spaces behind the rocks. There were no cracks around the surface either. This was too weird. Xia Changhe had hinted at this area, the intersection of 369 and 225. But the current circumstances had justified Tsukino Kyoko’s assumption of a faulty interpretation. 

Was Xia Lei mistaken? 

One minute of X-ray vision usage later, Xia Lei pulled out his dagger and continued to climb the surface. He grabbed the rock that the ninja had nailed to the wall. He climbed and made gashes on the surface with his dagger. 

Tsukino Kyoko was surprised to notice that Xia Lei had slashed the rock surface so effortlessly like he was creating patterns on dirt instead. The marks were deep and its edges had appeared jagged. Under normal circumstances, it was impossible for a mere dagger to register scratches this deep. 

Xia Lei’s motion ceased as soon as he marked a circle of one-metre diameter. Following that, he then drove his blade...