C16 Sun Dahai's Killing Intent

Arriving at the outer wall of the backyard, Zhang Qian didn't rush to find a way to enter, but found a dark corner and leaned his ear against the wall, hoping to hear what was going on inside. Fortunately, the backyard was a little off to the side and normally no one would come here, so he wasn't afraid of being discovered. Soon, a slight noise came to Zhang Qian's ears