The exchange Rates for the US Dollar and the Chinese Yuan

For the research we are aim to：

Research on currency exchange rate changes in China and the United States for nearly two to three decades, collecting data and analyzing data and simulating market changes to predict future currency changes.

I asked the professor. He told me to collect data and analyze the data and use the data to predict future changes.
The exchange rate for the US dollar and the Chinese Yuan should be searchable on Google.