The Errand Boy Caught a Spy and the System Made a Huge Profit of Five Million

Yang Xiaotian, an errand boy whose bank card balance has never exceeded three thousand. Until he bumped into a Japanese spy and activated the Great Wall Identification System! Bite! If an A-level spy is detected, a cash reward of 5 million will be received in real time! From low-level errand boy to national security informant, from penniless to rich overnight! The days of delivering food during the day, catching spies at night, and pretending to be pigs and eating tigers have begun! Special High School Spy: "You're a food delivery guy, how can you beat the National Security Bureau?!" Yang Xiaotian sneered: "I'm sorry, the system makes me the trump card."