Agricultural Bank of China and PetroChina have an agreement to reward 4% for recharging the fuel card (the credit card and fuel card must be the same person, without any additional requirements), and each card will be capped in 40 yuan every month.

Petrochina's fuel card itself has a 2% discount. If you go to refuel at 7 am or at 10 pm (some gas stations), you can also get a discount of 20 points.