It must be a must! For example, banks are justified in reducing and increasing credit cards. If your credit card usage is very mediocre and there is nothing particularly brilliant, banks will naturally not waste credit lines on you. I suggest that the landlord can test the card rating software to see if there is any abnormality in his card use and what aspects should be paid attention to in consumption. Usually take part in the bank's credit card preferential activities and keep the credit card limit between 50% and 80%, so that your credit card limit can be increased soon.