That is, you can only overdraw 1 yuan. Is it a new card? ICBC has some ultra-low credit cards, but the application conditions are extremely relaxed. Most people can't meet the requirements in other banks, so they will apply for such a card to facilitate the use of the card in the future. Save some money yourself, brush it several times and keep records for several months. It will give you an increase, but it won't give you much.