US President Donald Trump said he would urge China’s Xi Jinping to “open up” to American business, and belatedly added Nvidia’s Jensen Huang to the list of executives accompanying him on a trip to Beijing. “I will be asking President Xi, a Leader of extraordinary distinction, to ‘open up’ China so that these brilliant people can work their magic,” Trump said on social media. “I will make that my very first request.” Huang boarded Air Force One during a refuelling stop in Alaska on Wednesday,...