Guardian: China’s rise to be crowned as the world’s second-largest economy today is the latest milestone in a boom that has been running almost constantly since the country began the long process of embracing free-market principles more than 30 years ago. The Chinese economy has been growing at an average of almost 10% – three times the global average – since Deng Xiaoping became leader and started to introduce economic reforms. In dollar terms, its GDP has jumped from $147.3bn (£94.55bn) in …