An upgraded border crossing between Hong Kong and Shenzhen is expected to open next month, allowing travellers to complete immigration in just five minutes, according to authorities. The redeveloped Huanggang Port Building will be the first link between the two cities to adopt the “collaborative inspection and joint clearance” model. The South China Morning Post looks at the details of the checkpoint and what travellers can expect from the streamlined process. 1. How does it differ from the Lok...