Hong Kong’s economy and trade with the United States will benefit from greater stability and certainty brought by the summit between Chinese President Xi Jinping and his US counterpart Donald Trump, the city’s leader has said. “Hong Kong is an externally oriented economy, susceptible to the influence of the main market,” Chief Executive John Lee Ka-chiu said on Tuesday. “More certainty and stability in the market will greatly reduce the impact of external turbulence on Hong Kong.” Last week’s...