What's behind China's zero-covid policy?

In China, a handful of infections is enough to trigger lockdowns, mandatory tests and travel restrictions for millions of people. So, why is the government so determined to pursue a 'zero-covid' strategy? And how will this affect the economy and lives of one and a half billion Chinese? Join host Rob Matheson. With guests: Dan Wang - Chief economist, Hang Seng Bank China. Jeffrey Lazarus - Head of the Health Systems Research Group at Barcelona Institute for Global Health (ISGlobal). Professor Steve Tsang - Director of the China Institute, SOAS University of London.