If a girl is alone, she will recommend Happy Valley Window of the World, Chinese Folk Culture Village, Happy Coast, Shenzhen Bay Park, and 3D Star Fantasy and Fantasy Art Museum.
All the above scenic spots are concentrated, and there are many hotels nearby, which belong to the downtown area and are safe and secure. There are Futian Station and Shenzhen West Railway Station nearby, which are about the same distance. Shenzhen University is also nearby, so you can visit the campus.