Precision Navigation to Improve Community Cancer Screening Participation

Inclusion Criteria: 1. Aged 45 to 74 years. 2. Permanent resident of a participating community, defined as having lived in the community for at least 6 months during the past 12 months. 3. Participating in the urban cancer screening program. 4. Identified by the program risk assessment questionnaire as being at high risk for at least one of the following cancers: lung cancer, breast cancer, colorectal cancer, upper gastrointestinal cancer, or liver cancer. 5. Has not yet completed the corresponding free clinical screening test for the high-risk cancer type or types. 6. Able to complete electronic questionnaires and read intervention materials independently or with assistance. Paper materials and staff explanation will be provided for participants who do not use smartphones. 7. Able and willing to provide written informed consent. Exclusion Criteria: 1. Previously diagnosed with any of the target cancers, including lung cancer, breast cancer, colorectal cancer, upper gastrointestinal cancer, or liver cancer. 2. Severe cognitive impairment, severe mental illness, or other conditions that prevent the participant from receiving the intervention or completing study questionnaires. 3. Planning to be away from the community for a long period during the next 6 months, defined as cumulative absence of more than 3 months. 4. Currently participating in another interventional study that may affect cancer screening behavior.