Xi Jinping is the most powerful person in the world. But the real story of China's leader remains a mystery. In this eight-part series Sue-Lin Wong finds out how he rose to the top, and what it means for China—and the rest of the world—now that he has ripped up the rule book to stay in power, perhaps for the rest of his life.Sign up for Economist Podcasts+ at www.economist.com/podcastsplusIf you’re already a subscriber to The Economist, you’ll have full access to all our shows...