Question 2: Cash advance needs to pay handling fee and interest. From the day you borrow it, the handling fee will be deducted at one time and charged within the range of 0.5%-2%. The fees charged by each bank are different. You can check it online. The 50-day interest-free period is only for consumption, such as shopping in the supermarket and paying by credit card. Not for cash withdrawal.
Third, you should use your own card to bind, or you can use other banks' cards. Charge the transfer fee according to the regulations of each bank and go to the bank counter to handle it. By the way, you must make sure that there is enough money in the card. After the interest-free period, it is quite high. Even if there is only a dime difference, the bank will calculate the interest in full.