Hong Kong and Hainan should forge a strong partnership and explore new models of cooperation, the city’s leader has said, urging the business sector to capitalise on the mainland Chinese province’s free-trade port status by offering professional services in areas such as finance, law and accounting. Chief Executive John Lee Ka-chiu’s call followed a meeting with Feng Fei, the Communist Party secretary of the Hainan provincial committee, on the sidelines of the Boao Forum for Asia annual...