More than a dozen Chinese financial institutions, mainly trust companies, loaned 20 billion yuan ($2.8 billion) over the past five years to Wuhan Kingold Jewelry Inc. with pure gold as collateral and insurance policies to cover any losses. Kingold is the largest privately owned gold processor in central China's Hubei province. Its shares are listed on the Nasdaq stock exchange in New York. The company is led by Chairman Jia Zhihong, an intimidating ex-military man who is the controlling shareholder. What could go wrong? Well, plenty, as at least some of 83 tons of gold bars used as collateral turned...