Break the law. According to the relevant information of China Travel Service. Com, foreign exchange can't borrow someone else's ID card. This behavior is equivalent to lending and borrowing foreign exchange purchase quotas, which is strictly prohibited. According to the provisions of Article 46 of the Regulations on Foreign Exchange Control in People's Republic of China (PRC), those who engage in foreign exchange settlement and sale without approval shall be ordered by the foreign exchange administration authorities to make corrections and confiscate their illegal income.