基期轮换：确保CPI数据更准确反映消费新变化

Group 1 - The core idea of the news is the upcoming price index base period rotation in China, which is a fundamental statistical practice to ensure that the Consumer Price Index (CPI) accurately reflects current consumer behavior and economic conditions [2][3]. - The base period rotation will update the reference point for price comparisons from 2020 to 2025, allowing for a more accurate representation of the changes in consumer spending patterns [2][3]. - The CPI is designed to reflect the price level changes of a representative basket of goods and services consumed by residents over a certain period [2]. Group 2 - The rotation will involve adjustments to the CPI survey classification directory, survey points, representative specifications, classification weights, and price comparison base periods [4]. - New categories reflecting current consumption trends will be added, such as housing security equipment, elderly products, dishwashers, electric vehicle charging, photography services, internet medical services, and medical beauty services [4]. - The name of the "Food, Tobacco, and Alcohol" category will be changed to "Food, Tobacco, Alcohol, and Dining Out," and "Tourism" will be renamed to "Travel Agency and Other Tourism Services" to better reflect consumer spending [4]. Group 3 - The national CPI survey will cover approximately 120,000 points and about 620,000 specifications, expanding the coverage compared to the previous base period [6]. - New retail formats, such as membership-based supermarkets and flash sales platforms, will be included in the survey points, along with new representative specifications like smart drones [6]. - The data collection methods for CPI will be optimized, with an increased use of big data applications, including online transaction prices and administrative records [6]. Group 4 - The CPI weights, which represent the expenditure share of each category in the fixed basket, will see minor overall changes compared to the 2020 base period, with service weights increasing and consumer goods weights decreasing [7]. - Specific categories such as Food, Tobacco, and Alcohol; Transportation and Communication; Education, Culture, and Entertainment; Medical Care; and Other Goods and Services will see an increase in their weights [7]. Group 5 - The base period rotation will impact various policies linked to the CPI, such as price subsidy mechanisms for low-income groups when CPI growth exceeds certain thresholds [8]. - A more accurate CPI will also provide a reference for adjustments in interest rates, minimum pensions, and other livelihood policies [8].