"China remains the world's largest manufacturer, with four trillion dollars in foreign-exchange reserves, a sum equivalent to the world’s fourth-largest economy... Last spring, China abolished registered-capital and other requirements for new companies, and in November it allowed foreign investors to trade shares directly on the Shanghai stock market for the first time... The risks to China's economy have rarely been more visible. The workforce is aging more quickly than in other countries, because of the one-child policy, and businesses are borrowing money more rapidly than they are earning it... The growth of demand for energy and raw materials has slowed, more houses and malls are empty, and nervous Chinese savers are sending money overseas, to protect it in the event of a crisis... To maintain economic growth, China is straining to promote innovation... After China had spent years investing in science and technology, the share of its economy devoted to research and development surpassed Europe's... The era of Xi Jinping has defied the assumption that China's fitful opening to the world is too critical and productive to stall."