Some Chinese skiers are travelling to an unexpected destination to take part in the winter sport: the hot and humid tech hub of Shenzhen in southern China’s Guangdong province, during next month’s eight-day National Day holiday, also known as the “golden week”.Qianhai Huafa Snow World, which is being touted as the world’s largest indoor ski resort, is set to open there on Monday as authorities look to tie the winter sports economy to efforts to boost consumption.The 10-hectare (24.7 acre)...