For investment, the purpose of buying and selling forward foreign exchange is mainly to preserve value, which can avoid the risk of exchange rate fluctuation and thus ensure investors' own economic interests.

Preservation and appreciation of foreign exchange In the current unpredictable situation of US dollar interest rate and exchange rate, foreign exchange investors are most concerned about how to preserve and increase the value of foreign exchange in their hands. Yu Yi suggested that, based on the principle of symmetry between risks and benefits, the total amount of foreign exchange assets should be diversified in order to reduce the corresponding risks.