In reference to this blog entry, with GPS coordinates provided by blogger and appeared to be taken by experts. They had not determined if it is Yantian 鹽田 or Dameisha 大梅沙 Beacon though,
I had been to the beach of Dameisha, on the way to Da Peng Walled City back in the 1980's, but I was not aware of such a beacon back then.