What could break Hong Kong’s property market?

PLANES NO LONGER land in Kai Tak, Hong Kong’s old airport. But nostalgists can stroll along the new “sky garden”, an elevated walkway lined with frangipani, myrtle and acacia, that passes above the old runway. By scanning a QR code along the route, visitors can “augment reality” by superimposing an image of a landing plane on their selfies. The park is part of a redevelopment plan that will eventually yield a hospital, tax office and new homes for tens of thousands of people. On either side of the walkway, cranes, diggers and welders labour busily to augment the reality of Hong Kong’s cramped and pricey housing.