The name Shu Dao () is homologous to "Tree Island". Whether the origin is Chinese or English is unknown.
The names An Dao (), Chuan'an Dao (), and Chuanwan Dao (), are traditionally used among the Hainanese fishermen as the island was discovered at night some centuries ago.
The island is open to tourists. Tourists may require political examination in Haikou of Hainan Province before taking a tour there, and can alternatively hire a fishing boat from Hainan. There are beach volleyball equipment and facilities located on the island; there is also a Chinese temple ruins dating back to the Ming dynasty.
PRC's baselines declaration
The Declaration of the Government of the People's Republic of China on the baselines of the territorial sea (May 15th, 1996): -
3 points on Zhaoshu Dao (Tree Island) are the baseline points of the Chinese territorial......