1, and each swipe cannot exceed 30% of the total amount.
2. You can't empty all the cards, but you should leave at least 20% for bookkeeping.
3. You can't always brush integers.
4. Try not to use 0, 6, 8 and 9 as the mantissa of the credit card amount.
5. swipe your card from 9 am to 9 pm every day.
6. Brush in the morning and afternoon, no more than 3 times a day, and the interval between swiping cards is more than 4 hours.
7. The number of swipes per month is more than 25-45 times.
8. Pay a small installment every three months.
According to this method, combined with offline consumption, you will definitely be able to raise the amount in a few months!
Note: Pay more in person, but pay less when scanning the code!