Personally, I suggest you try the study abroad remittance function of CITIC Bank, which is a cross-border remittance method that does not occupy foreign exchange quota. I've had problems similar to yours before. First of all, the amount of foreign exchange purchased by individuals each year is fixed. Because the amount of remittance needed each year far exceeds this fixed amount of foreign exchange purchased, the amount of foreign exchange is often insufficient. Later, my schoolmate recommended me to use the function of studying in CITIC Bank, so I no longer have to worry about insufficient foreign exchange quota. I hope my answer can help you.