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Core Viewpoint - The national 1% population sampling survey will commence on November 1, 2025, aiming to gather timely data on population changes in China, which is crucial for developing population support systems and strategies to address aging and promote high-quality population development [4]. Group 1 - The survey will be conducted from November 1 to November 30, 2025, targeting approximately 5 million households and 14 million individuals across the country [4]. - The survey will collect basic information about the population and households, including name, ID number, gender, age, ethnicity, education level, industry, occupation, migration, marital status, fertility, mortality, and housing conditions [4]. - Data collection will be carried out by government statistical agencies using electronic devices or through self-reporting via the internet to ensure efficiency and accuracy [4][5].