Shenhao Started with a Black Screen on His Phone

Yu Liang, a junior student, woke up in the morning and found that there was a "Shenhao System" on his mobile phone. And it cannot be uninstalled, the phone screen is black. Later, he researched and found that the biggest function of the Shenhao System is "ten times cash back". Every penny spent by Yu Liang on his mobile phone will be immediately returned to his bank account ten times as cash. With the "Shen Hao System" Yu Liang reaches the peak of his life...