One day is too tight, so it is recommended to visit Dameisha Waterfront Road and Dameisha Waterfront Beach to see the sea. Both of these attractions are free, then go to East OCT, Grand Canyon or Chaxi Valley to choose one and buy a ticket to visit. In the evening, go to Tiantang Road, Luohu District, and have a seafood at the food stall. There are many kinds of seafood and their prices are cheap. Then, walk to Dongmen Old Street, cross Shennan Avenue from the old street circular footbridge, reach Guo Mao and Jinguanghua business district, and have a look at Shenzhen The appearance and night scene on the way. If you hurry up, it should be enough, and the route landscape is also good!