More than 2000 yuan can be used to buy dollar funds, which refer to investment funds that invest in the dollar market. It should be noted that dollar funds are highly volatile and have high investment risks. Dollar funds mainly invest in global stocks, bonds and money market instruments, and their value is affected by fluctuations in foreign exchange markets and asset prices. Buying dollar funds needs to consider handling fees and exchange rate risks. Handling fees will reduce investment income, and exchange rate fluctuations will affect the proportion of RMB converted into US dollars.