Yuwen Chengde nodded. He turned around, went under the cloth shed, and pointed at the footprints and marks on the ground. "According to the Imperial Boxing Dojo, Instructor Zhang went out to patrol in the middle of the night and didn't return for an hour. Other instructors went to look for him and found the corpses of two people here. Because there were many people practicing martial arts at night around here, the few students living nearby didn't notice any special movements. The murderer was quite experienced and wiped away all the traces. Even Sir Shang didn't see anything…"
Ye Jingtang half-squatted down and carefully examined the ground. He could see that the footprints made during the battle had been all smoothed out by someone's shoes. He could no longer see the posture and direction of exerting force. He could only determine the approximate position.
