Group 1 - The core viewpoint of the articles indicates that the Consumer Price Index (CPI) showed a slight increase in September, while the Producer Price Index (PPI) continued to decline, reflecting mixed trends in the economy [1][2][3] - In September, the CPI increased by 0.1% month-on-month, while the year-on-year CPI decreased by 0.3%, with the decline narrowing by 0.1 percentage points compared to the previous month [1] - The core CPI, excluding food and energy prices, rose by 1.0% year-on-year, marking the fifth consecutive month of growth and the first time in nearly 19 months that the growth rate returned to 1% [1][2] Group 2 - The decline in the CPI was primarily influenced by a drop in food prices, which fell by 4.4%, contributing significantly to the year-on-year decrease [1] - The PPI remained flat month-on-month for two consecutive months, with a year-on-year decline of 2.3%, but the rate of decline narrowed by 0.6 percentage points compared to the previous month [2][3] - Positive changes in various industries, such as coal processing and metal smelting, have led to a reduction in the downward pressure on the PPI, with specific industries showing improved price stability [3]