Panzhihua used to be a state secret. The steel-making city, buried deep in the mountains of Sichuan, formed part of Mao Zedong’s Third Front, a covert plan to move core industries inland in case America or the Soviet Union attacked.  David Rennie, The Economist’s Beijing bureau chief, travels to Panzhihua to reflect on China’s ambitious, costly experiment in self-reliance. He and Alice Su, The Economist’s senior China correspondent, ask what lessons the city provides today and what happens when China’s leaders choose national security over economic interests.  Sign up to our weekly newsletter here and for full access to print, digital and audio editions, as well as exclusive live events, subscribe to The Economist at economist.com/drumoffer. Hosted on Acast. See acast.com/privacy for more information.