解读：9月核心CPI同比涨幅持续扩大，PPI同比降幅继续收窄

Group 1 - The consumer market in September showed overall stability, with the Consumer Price Index (CPI) rising by 0.1% month-on-month and decreasing by 0.3% year-on-year, while the core CPI excluding food and energy prices increased by 1.0%, marking the fifth consecutive month of growth [1][2] - Food prices rose by 0.7% month-on-month, contributing approximately 0.13 percentage points to the CPI increase, with seasonal price increases observed in fresh vegetables, eggs, fresh fruits, lamb, and beef, ranging from 0.9% to 6.1% [2] - The year-on-year CPI decline of 0.3% was primarily due to the tail effect, with food prices dropping by 4.4%, significantly impacting the CPI [3] Group 2 - The Producer Price Index (PPI) remained flat month-on-month for two consecutive months, with improvements in supply-demand structure stabilizing prices in certain industries, such as coal processing and black metal smelting [4] - The year-on-year PPI decreased by 2.3%, but the decline was narrower by 0.6 percentage points compared to the previous month, influenced by macroeconomic policies and improvements in market competition [5] - Industries such as coal processing, black metal smelting, and photovoltaic equipment manufacturing saw reduced year-on-year price declines, indicating positive changes in market conditions [5]