Group 1 - The core observation indicates that the prices of major commodities in Jining City, Shandong Province, are showing a mixed trend, with stable yet declining grain and oil prices, weak pork prices, significant increases in egg prices, and a slight rise in vegetable prices [1][3][5] Group 2 - Grain and oil prices are stable with a slight decline; as of September 18, the average prices for wheat and corn are 1.17 yuan/kg and 1.11 yuan/kg respectively, with corn prices decreasing by 2.63% [1] - Pork prices are under pressure, with average prices for lean pork and pork belly at 13.43 yuan/kg and 11.86 yuan/kg respectively, where lean pork prices remain stable and pork belly prices have decreased by 1.50% [4] - Egg prices have seen a notable increase, with average prices for white strip chicken and eggs at 8.13 yuan/kg and 3.93 yuan/kg respectively, reflecting increases of 0.99% and 10.70% [4] - Vegetable prices have shown a slight upward trend, with an average price of 3.00 yuan/kg, marking a 1.13% increase; notable increases include green chili and cabbage, which rose by 11.59% and 7.49% respectively [5]