The price of foreign exchange is determined by the international market. The relationship between supply and demand of funds determines that under normal circumstances, if the demand for local currency is relatively high, the price of local currency will increase directly accordingly. On the contrary, if it's going to the international market of B, the demand is relatively low, then its selling pressure is relatively heavy, so. The price of North North will drop. In short, the foreign exchange price is there. The supply and demand relationship between the two sides of the ball control is certain.