It seems like there's some kind of security system here; if an outsider were to open the door and be greeted by this scene, they might scream in terror, which would activate the voice-activated alarm system, triggered by a sound reaching a certain threshold.
After entering this Underground City, Su Xuan couldn't say whether it was just the atmosphere, but upon seeing the advanced and precise equipment around, Su Xuan knew he had come to the right place. This must be the experimental base where those trained individuals are brought and fitted with surveillance devices.
Su Xuan walked slowly, observing the high-end equipment, and soon spotted a row of shelves lined with jars. The sight made Su Xuan shudder because each jar contained human organs, showing that the Headhunting Company was indeed linked to the human trafficking organization.
