Whether it's 3K or 5K, it's generally passed if you apply for an increase in the quota yourself, as long as there is no bad record. It is best to live in your own or your family's house. After all, it is a dormitory, which may be an influence. Dual-currency cards are cheaper than single-currency cards. I have a 5K, which is double currency. I have a 1W, which is in single currency.