BEIJING, China (AFP) — China’s Xi Jinping has called for an “all-out” campaign to build infrastructure, according to state media, marking the latest attempt by leaders to boost growth in the Covid-battered economy. Despite struggling to defeat the country’s worst outbreak in two years, the leadership is digging in its heels with a strict zero-Covid policy that involves lockdowns in the biggest cities and mass testing. But the measures have snarled supply chains and hammered […]