The world’s longest expressway tunnel has opened to traffic in the Xinjiang Uygur autonomous region, capping five years of construction on a project designed to increase China’s links with Central Asia. The 22.13km (13.75-mile) Tianshan Shengli Tunnel, the centrepiece of the Urumqi-Yuli Expressway, officially opened on Friday, creating a 20-minute drive through the Tianshan Mountains that divide northern and southern Xinjiang. The tunnel halves the travel time between the regional capital Urumqi...