Lin Chen unexpectedly awakens a sign-in system, and through daily sign-ins, becomes the world's richest man. "Ding, congratulations host on successful sign-in, reward: a supercar worth three billion." "Ding, congratulations host on successful sign-in, reward: a Xinghewan villa, worth thirty billion." "Ding, congratulations host on successful sign-in, reward: a Guomao shopping mall, worth hundreds of billions."