I think the core representative of Guangdong tourism is the Pearl River Delta region. Suggest two days in Guangzhou (Yuexiu Mountain, Baiyun Mountain, Shangxiajiu Pedestrian Street, Shamian, Changlong, etc.), one day in Shenzhen (Mangroves, Dameisha, Window of the World) and one day in Zhuhai (Huandao Road, Paifang). You can spend a day in Jiangmen to see the watchtower (let the bullets fly to the shooting place). Then you can consider going to Chaoshan area (the ancient city of Chaozhou) for the rest of the time.