As far as I know, there is only Binhai Park in Haikou, but there is no Nansha Binhai Park as you said.

Take a taxi from Binhai Park about 10 yuan, which is very close to Hainan Xinhaigang Hotel.

Nansha Seaside Park is located in Nansha District, Guangzhou. There is a Nansha Seaside Park here ... Hehe.