After spending three months or half a year frequently by swiping your card, you can print a detail at the counter of China Merchants Bank with your ID card and credit card, including the consumption record, and hand it over to the credit card account manager of the county-level branch, who will forward it to the credit card department of the prefecture-level branch of China Merchants Bank \ x0d \ or call the customer service of China Merchants Bank or the credit card customer service of China Merchants Bank after spending three months or half a year by swiping your card, and ask for an increase in the credit card limit.