The King of Hell Pays My Salary

Chen Mo, twenty-six, a broke office worker. One day, a new app appears on his phone—check in daily, get paid, simple. He thinks it's a windfall, until the check-in location becomes the entrance to the morgue. The check-in spots increasingly turn to the underworld, and the rewards increasingly resemble funeral objects. For his father's life-saving money and the thirty-year perfect attendance grand prize, he grits his teeth and keeps going. Later, he discovers: this app isn't giving him money—it's burning him as fuel. By day, he works for his boss; by night, he works for the King of Hell. Not dead yet, but his job is already set. — Description from novelcodex.org