Hong Kong’s leader begins an official visit to Central Asia on Monday with his largest delegation to date, aiming to explore new markets amid geopolitical uncertainties and help mainland Chinese companies “go global”. Sources said dozens of memorandums of understanding (MOUs) were expected to be signed by representatives from various sectors and their counterparts in Kazakhstan and Uzbekistan during the five-day visit. One of the deals under the spotlight will be between tungsten miner Jiaxin...