Chinese port city near North Korea beefs up Covid controls

A key Chinese port city near the border with North Korea has launched regular Covid-19 testing for all 7.5 million inhabitants as its isolated neighbour grapples with a spiralling outbreak. China has stuck to a hardline, zero-Covid approach that has left the capital Beijing under a mosaic of restrictions and confined most of the 25 million residents of Shanghai to their homes for weeks. Across the border, impoverished, nuclear-armed North Korea has announced more than 1.7 million infections since last week, putting Chinese authorities on edge. Officials in Dalian - a port around 300km (190 miles) from North Korea -…