US and China: Whose economy is bigger?

We discuss chips and tariffs as well, and ask whether China will overtake the US economically in the next 50 years. Rahul Tandon talks to Stephen Roach, former Chief Economist at Morgan Stanley, Dr Henry Huiyao Wang is Founder and President of the Centre for China and Globalisation in Beijing and Lulu Chen, Bloomberg's Asia Investing Team Leader in Hong Kong. (Picture: Flags of China and the USA. Isolated on a white background. Credit; Getty Images)