HONG KONG (AP) — Hong Kong led gains in Asian stock markets Wednesday after an official said China will set up a second stock trading link with the city this year while Japan surged on a blockbuster share sale. People's Bank of China Governor Zhou Xiaochuan said in an article on the central bank's website that a stock trading link between Hong Kong and mainland China's second smaller exchange in Shenzhen will be launched this year. Stock exchange operator Hong Kong Exchanges and Clearing Ltd.