how to go by public transportation from Luohu Railway Station in Shenzhen to Nan'ao beach?

From the Luohu station, there is no direct bus to reach Nan'ao beach.
But you can take a taxi to reach Liuyibu Bus Station near the Cuizhu Subway Station. At Liuyibu bus station, you can find bus E11 to take you to reach the Nanao Bus Station directly.
Then you can use the Nanao local transportation to reach that beach.