In terms of scenic spots, it is recommended to go to OCT Grand Canyon or Chaxi Valley. These are both paid attractions, and I personally recommend the Grand Canyon.
If the park is free, Shenzhen Talent Park is recommended. You can see the panoramic view of Houhai CBD. In addition, it is connected with the mangrove bay leisure belt. You can stop by mangrove bay. The location is very good.
I have their travel notes, so I can have a look.