Suggest two days in Guangzhou and three days in Shenzhen. Shenzhen is a beautiful city with a long coastline and peninsula. The scenic spots in Shenzhen can be divided into three categories. 1. Theme parks, such as Sea World, Window of the World, Happy Valley, Green World, Sea Pastoral, Happy Coast and so on. But at present, the best is the OCT in the east of Yantian District, which is the largest and most beautiful theme park community in Shenzhen, including the Grand Canyon, Yunhai Valley, Chaxi Valley and so on. 2. Sea view. Yantian District and Dapeng New District in the east of Shenzhen are mainly based on tourism, with beautiful coastlines and beaches. Dameisha, xiaomeisha, Xichong and Dongchong are its representatives. The sea there is very clear. 3. Urban scenery. The scenic spots that embody Shenzhen&;s international metropolis and reform and opening up mainly include Shennan Avenue, Jinji 100 Building, Civic Center Building, Convention and Exhibition Center and Huaqiang North.