In a week when the economic impact of coronavirus on the global economy was made clear, political economy editors John Carter and Zhou Xin join Finbarr Bermingham to discuss China's "wolf warrior" diplomats, the second wave demand shock to hit China's economy and why, when the rest of the world is firing financial bazookas, China is keeping its powder dry.Trade expert and SCMP columnist David Dodwell then gets his crystal ball out to try and envisage the post-coronavirus global supply chain…