Spokesperson from People's Bank of China said on June 19th, \"further advance the reform in RMB exchange rate formation mechanism, and strengthen the flex- ibility of RMB exchange rate.\" \"Ibis is the first time for China central bank give a clear attitude on reform in RMB exchange rate, which attracts ~reat attention for global market. Does strengthening the flexibility of RMB exchange rate mean that RMB will appreciate again? Why the central bank announces the news at this moment? How to choose the time for the reform in RMB exchange rate formation mechanism?