Summary:
Find out the name of this Chinese city, city-state, and port city.

Full article:
(CNN) -- Thank you to everyone who took part in our mystery photo challenge! Congratulations to everyone who answered Hong Kong. To recap, here are the clues we provided: . Hint one: More than seven million people live in the territory where this port is located. Hint two: It is one of the busiest container ports in the world, handling 23.7 million containers in 2010. Hint three: Its central location means it is an important hub for the region, with container line services going to approximately 480 destinations around the world.