China's Asian Infrastructure Investment Bank is closer to launch after an official signing ceremony at the Great Hall of the People in Beijing. Officials from 57 nations took part in the event that marks a significant step for the world's second-largest economy.

Authorities in Hong Kong put on a show Wednesday to celebrate the 18th anniversary of the territory's return to Chinese rule. But tens of thousands of people took the opportunity to stage a rally calling for more democracy. Students were prominent among the protestors, just as they were a year ago at the start of what became known as the Umbrella Revolution. We look at some of the reasons the young generation is so politically active.