Weird Check-In System

Under the calm waters of modern cities, there is a parallel world called the "Martial Arts World" hidden. The ancient martial arts family has been inherited for thousands of years, the hidden sect has undercurrents, and the country has a special "Longyuan Bureau" to govern extraordinary affairs. Ordinary people know nothing about this, but the protagonist Lin Yi, an ordinary college student who makes a living by delivering food, is bound to a sign-in system with a strange style after being struck by lightning one day.