Ahead of US President Donald Trump’s grand entry to Beijing on May 14, his cavalcade is already on the move in the Chinese capital. Two black SUVs with tinted windows and US government plates were spotted on a Beijing highway, according to images that circulated on Wednesday, signalling the start of an intense security build-up for the year’s most significant diplomatic event – the China-US summit. Chinese social media is full of the images showing heavily armoured US Secret Service Suburban...