SHANGHAI (Reuters) -China kept its benchmark lending rates unchanged for the fourth consecutive month in September, in line with market expectations, following the central bank's decision to hold a main policy rate steady last week. WHY IT'S IMPORTANT The steady loan prime rate (LPR) fixings reflect the authorities cautious approach to monetary easing amid easing Sino-U.S. trade tensions, resilient exports and a recent stock market rally, despite signs of a domestic slowdown and monetary easing by the Fe ...