This study aims to investigate the impact of a BMI-stratified intervention program based on the meridian-lymphatic axis theory on the incidence of lower extremity lymphedema in postoperative patients with gynecological malignant tumors at 1 month, 3 months, and 6 months, and to validate the precision and effectiveness of this program compared to traditional CDT. Primary objectives: to evaluate the effects of this program on reducing the incidence of lymphedema, alleviating lymphedema-related symptoms (assessed via GCLQ score), improving patients' quality of life (assessed via LLQoL score), and enhancing patients' self-management behaviors.