The City of Silent Echoes is set in a near-future Guangzhou, China, where society is rigidly split between realistic, bustling daily life, and the terrifying nightly Quiet Hours (23:00 to 05:00). During these hours, the city belongs to the Ghosts (Jìngwù), blind, obsidian-shelled alien creatures that hunt using flawless acoustic detection.
Seventeen-year-old Lei is one of many citizens forced to navigate this precarious dual existence. His world is shattered when his girlfriend, Mei, a logistics worker and brilliant amateur researcher, vanishes during the nightly attacks. Driven by romantic devotion and a desperate need for answers, Lei believes Mei’s last secret message points to a hidden research tablet that holds the key to the creatures' origins—a truth the government is actively concealing.
Armed only with heavily padded gear, his intimate knowledge of the city’s acoustic vulnerabilities, and a fragile, government-issued sonic scrambling device called the Mute-Box, Lei embarks on a dangerous three-kilometer action trek across the silent, horror-filled urban landscape.
The novel follows Lei’s journey as he evades the sound-based hunters and races against the dawn, diving headfirst into a massive sci-fi conspiracy to discover what the Ghosts truly are, and why Mei's findings were deemed too dangerous to live. It is a story of quiet bravery, technological failure, and the deafening sacrifice one boy is willing to make for love in a city where silence means both safety and certain death.