The RMB's internationalization developed very quickly from 2010 to 2015H1, but it slowed down significantly since 2015H2. This paper argues that cross‐border arbitraging activities played a significant role in both the boom and the bust of the RMB's internationalization. A slower pace of the RMB's internationalization based more on real demand might become a new norm in the future. To pursue a more sustainable RMB internationalization in the next decade, the Chinese government should maintain a relatively high economic growth rate, avoid the burst of systemic financial crisis, continue to liberalize the capital account in a gradual and cautious way, accelerate the reform and opening up of the domestic financial market, and integrate the RMB's internationalization with Asian monetary cooperation.