Answers to three questions: 1. Try to change dollar bills, but you can't change the next best Hong Kong dollars. If you have closed the exchange window, take out the necessary living expenses, prevent a run, buy physical gold and reduce your local currency assets, including real estate bonds and paper gold. 2. Shares of gold and silver mining companies and some agricultural stocks. 3. Steady type is RMB forward swap hedging depreciation and aggressive RMB/USD exchange rate futures shorting.