After Entering and Exiting the University, I Became a Powerful Person

The protagonist is Lin Fan, an ordinary student who attends university. On a very ordinary day, he bought a bottle of Coke. Suddenly, a voice appeared in his mind, congratulating the host for buying a bottle of Coke and getting a reward of 300 yuan. The system in his mind was clearly marked with a few big words "100 times cash back system"... "From now on, I, Lin Fan, have reached the pinnacle of my life!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.