Economic calculation:
According to the security needs of trade and debt repayment, in theory, China only needs $700 billion in foreign exchange reserves. Among them, the repayment of foreign debt needs about 270 billion US dollars, and the normal import trade foreign exchange needs about 360 billion US dollars.
At present, foreign investment in China is about 500 billion US dollars. If it is remitted according to the annual profit 10%, plus the factors that may be omitted in capital control, it will cost about 70 billion US dollars. Considering political and diplomatic factors, foreign exchange reserves can be appropriately increased by $654.38+000 billion on the basis of the above. China has 800 billion US dollars of foreign exchange reserves, which can basically guarantee economic security.