No one dared make a sound in Dock District Seven during the three-minute Silent Echo, but Huang San collected the Silent Echo tax right in the street, demanding double from Pei Zheng. If she refused, he'd shut down her stall and confiscate her tools. The old resonance device fragment in Pei Zheng's left ear first went numb. Then the lighthouse loudspeaker burst out, all by itself, with a muffled crash of a roof collapsing. Her broken resonance device had somehow reproduced the original sound, word for word. In front of everyone, she played Huang San's words from the back alley: