Massive holiday crowds swamped the revamped Huanggang Port on Sunday during its first real test over the festival long weekend, with some travellers reporting two-hour waits. Outbound passenger traffic was “exceptionally heavy” between 10am and 2pm, with more than 30,000 departures, according to the Immigration Department. The surge prompted officers to open all inspection counters and implement a tidal flow system to control crowds and ease congestion. The Hong Kong Security Bureau issued the...