**Study Summary:** **Repetitive Transcranial Magnetic Stimulation (rTMS)** is a treatment that uses magnets to help treat Parkinson's disease (PD). It's a safe and non-invasive way to improve symptoms like slow movement or stiffness. In this study, we are testing rTMS to see how well it works and how safe it is for people with PD. The study will take place in many hospitals across China. We will use a special type of rTMS called **Continuous Theta Burst Stimulation (cTBS)** on an area of the brain that helps control movement. Participants will receive this treatment for 7 days and we'll check how they feel before and after. **Key Points:** - **Duration:** Treatment lasts 7 days. - **Visits:** Multiple visits to participating hospital centers. - **Eligibility:** Must be 40 or older, diagnosed with PD, and have no recent medication changes. Participants cannot join if they have certain medical conditions or treatments, like brain injuries or metal implants, as these may interfere with the study. This research will help us understand if rTMS can be part of regular care for PD.