The primary aim of the proposed study is to assess the feasibility and acceptability of conducting a randomized controlled trial (RCT) that evaluates an adaptive weight management intervention, tailored to Chinese cancer survivors with overweight/obesity after the completion of cancer survivorship care, to improve anthropometric measures (body weight and BMI), dietary quality, physical activity levels, physical and psychosocial functioning, self-efficacy for weight loss and quality of life. According to the Consolidation Standards of Reporting Trials (CONSORT) guidelines for reporting feasibility trials, hypothesis setting for a feasibility trial is not recommended, given that pilot trials are often underpowered to detect difference which instead should be the aim of the main trial.