Eyeing massive new shipping facilities near the Three Gorges dam, China has formally begun construction on an ambitious project to enable the passage of larger vessels and streamline logistics along the nation’s most critical waterway.The centrepiece of the planned 77.2 billion yuan (US$11.4 billion) infrastructure buildout, which looks to span nearly a decade, is a series of mega ship locks – colossal structures also known as “water elevators” or “water staircases” that are built into a...