China is renowned for creating “ghost cities”: new, sparsely populated districts that gradually come to life as people move into them. Shanghai’s lockdown reversed this process, turning a lively metropolis into something undead. During Shanghai’s long lockdown, which mercifully eased this week, the city’s impressive infrastructure stood in splendid isolation from most of the citizens it is meant to serve. Spending on transport, water conservation and renovating old neighbourhoods will be a “strong driving force” for the economy, helping to employ China’s 290m migrant workers, said Li Keqiang, the prime minister, in an emergency teleconference with thousands of local officials on May 25th. Should China spend more on infrastructure ?

