On a Saturday evening, Causeway Bay crackles with its famous retail energy, yet by 9 o’clock the streets begin their nightly death. There is nowhere magnetic to spill into – no late-night jazz den, immersive dinner theatre or playhouse humming with an experimental musical. Nearby, the 40,000-seat Hong Kong Stadium squats in silence while the catering rooms of the Happy Valley racecourse sit largely empty on non-race nights. This dead zone between one of the world’s densest shopping districts and...