China’s central bank kept borrowing costs of its medium-term policy loan unchanged for the third straight month as expected on Friday, despite Beijing calling for more monetary stimulus to cushion an economic slowdown. The People’s Bank of China (PBOC) said it was keeping the rate on 150 billion yuan (U$23.52 billion) worth of one-year medium-term lending facility (MLF) loans to some financial institutions unchanged at 2.85% from the previous operation, to “maintain banking system liquidity reasonably ample”, according to an online statement.