China's consumer price index (CPI) fell by 0.1% in April from a year earlier, unchanged from March's 0.1% decline, the National Bureau of Statistics (NBS) said on Saturday.On a monthly basis, consumer prices rose by 0.1%, a change from March's 0.4% decline. The NBS also reported that the producer price index (PPI) fell by 2.7% year over year, marking a continued decline in factory-gate prices.The readings came within market expectations.