Answer:
The value of the US dollar would go up whilst that of the Chinese currency would decrease.
Step-by-step explanation:
This would be as a result of the market forces of demand and supply, by buying the US dollar the demand for USD would be increasing on the market and therefore the value/price would increase to meet this demand. The Chinese currency would reduce in value because of the excess supply of it on the market, by buying USD with Chinese currency it would flood the foreign exchange market with Chinese currency. However this would be mitigated to some extent by the increase in reserves.