Hong Kong welcomed more than 4 million visitors in May, a 20 per cent year-on-year increase, with authorities attributing the surge to the Labour Day “golden week” holiday. According to provisional figures released by the Tourism Board on Monday, more than 3.1 million of the visitors in May were from mainland China, a 19 per cent rise from last year. The number of non-mainland tourists also increased by 24 per cent from May last year to 955,345. Of these, 56.2 per cent were short-haul...