西贝大降价！

Group 1 - The core action taken by Xibei is a significant price adjustment on menu items, with increases ranging from 20% to 40% across its nationwide stores starting October 1 [1] - The price adjustment was unexpected, leading to a situation where new price tags had to be affixed to old menus due to the sudden notice [1] - Specific menu items have seen varied price changes, with some items experiencing price reductions while others remain unchanged [2] Group 2 - The item "葱香烤鱼" saw a price drop from 89 to 79, reflecting an 11% decrease [2] - "胡麻油炒鸡蛋" was reduced from 43 to 33, marking a 23% decrease [2] - Conversely, "鸡汤白玉山药炖豆腐" increased from 43 to 46, indicating a 3% rise [2]