近19月来首次，核心CPI同比涨1%

Group 1: CPI Analysis - In September, the Consumer Price Index (CPI) increased by 0.1% month-on-month and decreased by 0.3% year-on-year, with the core CPI (excluding food and energy) rising by 1% year-on-year, marking the first return to this level in 19 months [1][4] - The year-on-year decline in CPI was primarily due to a "tail effect," with food prices dropping by 4.4%, significantly impacting the overall CPI [4][5] - The increase in core CPI is attributed to the effects of consumption promotion policies and rising prices in appliances and mobile phones, which offset the decline in food prices [4][5] Group 2: PPI Analysis - The Producer Price Index (PPI) remained flat month-on-month in September, with a year-on-year decline of 2.3%, a reduction in the decline by 0.6 percentage points compared to the previous month [6][7] - The flat PPI reflects weak domestic demand despite stable international oil prices and rising copper prices, with certain export-heavy industries facing price pressures [6][7] - Future PPI trends are expected to remain flat in October, with a year-on-year decline projected to be around 2.2%, indicating challenges in turning positive by year-end [6][7]