It's a crucial moment for China's economy and trade, nevermind the phase one deal signed with the US. As it faces up to its role at the epicentre of a global health emergency, Beijing is also facing up to an impending political disaster if GDP drops below 5 per cent. Finbarr Bermingham analyses the impact of the coronavirus on global trade and the implications for China's economy with Nick Marro, global trade lead, Economist Intelligence Unit and Zhou Xin, political economy desk editor, South…