BEIJING – A Winter Olympics overshadowed by rights concerns and Covid will officially begin in Beijing on Friday with an opening ceremony at the “Bird’s Nest” stadium. The distinctive lattice-shaped arena took centre stage at the 2008 Games — seen as China’s coming-out party to the world — and will do so again as Beijing becomes the first city to host both a Summer and Winter Olympics. Friday’s opening ceremony starts at 8:00pm (1200 GMT) and will be attended by President Xi Jinping, under whose rule China has become a much more belligerent proposition in global affairs compared to 14 years ag…