I have already written about the iconic Lianhuashan park Lianhuashan Park Shenzhen
It is a popular choice for a walk, picnic, kite flying and many other things. However it also has phenomenal night time views too.

You can get sweeping views of Futian CBD below you, and see the Deng Xiaoping statue too. Deng Xiaoping

It is easy to get to the top only taking 10-15 mins, and due to its central location it is quite convenient to get to also.

Location
Lianhuashan Park, 6026 Hongli Rd, Futian District, Shenzhen, Guangdong, China
深圳市福田区红荔路6030号莲花山公园
Childrens Palace metro station Exit F
ALL THE PARKS IN SHENZHEN HERE Guide to the parks in SZ