Wooden sovereignty markers - Evidence of sovereignty markers placed on the Hoang Sa archipelago under the reign of King Minh Mang. 

In 1836, Emperor Minh Mang approved the requests of the Ministry of Works and ordered the navy captain Pham Huu Nhat to bring soldiers to Hoang Sa to draw a map and establish sovereignty markers. There were 10 wooden markers. According to the historical records, the wooden markers were five Chinese foot long, five Tac wide, one Tac thick (Tac is an ​​Ancient Vietnamese unit of length, 01 Tac equals around 01 decimetre​​). These markers inscribed that “In Minh Mang monarchy’s year 17th, Binh Than, Chief of Flotilla received order from the naval  captain Pham Huu Nhat to perform measuring and stele-carving tasks”. 

 Based on the aforementioned information, the Museum of Paracel Islands has restored the wooden markers to the original size, so that the public can better understand the efforts of the Nguyen Dynasty in exercising sovereignty over Hoang Sa archipelago.