Gravitas: Is Hong Kong Xi Jinping's biggest political challenge yet?

As The Protests In Hong Kong Continue For The Third Month, Here's A Look At How The Protests Is Likely To Impact Xi Jinping. The Hong Kong Protests could be the Waterloo for Xi Jinping. Is this the biggest challenge in his political career? Will Hong Kong protests turn out to be the worst Xi Jinping has faced in his career? Here's a report