This is believed to be the final resting place of the last Emperor of the Southern Song Dynasty who died in 1279 after escaping the Mongols who had taken the dynastic capital Hangzhou. People cannot say with any certainty if this is the actual tomb but it is pretty certain the Emperor died in this region and there are lots of folk tales that support the evidence.
The tomb was brought to modern light by the research of Zhao Clan of Hong Kong (Zhao was the Song Imperial Surname) in the 19th century. It was neglected during the Cultural Revolution and much of the 20th Century. The Shenzhen government restored the tomb in the 1980s.