Hong Kong has always been about trade and in the 21st century a coterie of promising start-ups are keeping the tradition. Here’s just a few to sate your appetite. From Imperial China to the British Empire to the People’s Republic of China, the port city of Hong Kong has always been on the world stage. It has survived the tribulations of the Opium Wars, World War II and now holds the keys to its own destiny, albeit as an autonomous territory of China. The city, home to more than 7m people, has a lot going for it.