That’s from Bloomberg. Ya gotta wonder who’s running the show there.
For the sake of concreteness, here is a time series plot of GDP (in PPP terms, current international dollars) for the People’s Republic of China, Taiwan, and US.
Figure 1: GDP in billions of current international dollars, for US (blue), People’s Republic of China (red), and Taiwan, also known as Republic of China (green). Source: IMF, World Economic Outlook database, April 2017.