The Signal works as ritual: a shared code that gathers people who know how to listen. It’s how the night crawlers find one another without making a spectacle—by frequency, by small entrusted signs. The examples above show the economy of favors and the physical artifacts that make the myth plausible. Night crawling is motion: measured steps, timing, crossing thresholds that daylight locks away. The crossing is not merely diagonal through a plaza; it is the deliberate movement of things and people tethered by consequence. Fu10’s crawlers learned routes that avoided cameras and levered open moments when a bus exhaled its last passenger or a bakery slid its shutters for a single, culpable breath of warm yeast.