"Xu Lang (Xu Zheng), a successful business man, spent five years inventing a magical product called "Oil Pao" - every time he refuels the car, he only needs to fill it up to two-thirds, and then add 2 drops of "Oil Pao" , the fuel tank will become full of gasoline. Xu Lang's classmate and business rival Gao Bo (played by Huang Bo) wants to..."