Beijing has pledged to step up macro policy support and enhance the resilience of capital markets for the remainder of the year, following a slowdown in second-quarter economic growth and rising volatility in global stock exchanges.After a meeting of the Communist Party’s 21-member Politburo – a major decision-making body led by President Xi Jinping – that ended on Thursday, the party’s upper echelon vowed to accelerate the pace of fiscal spending and speed up the transition from old to new...