believe the ancient Yi to have been related to the Hundred Yue, with this explaining the close relationship between Yelang and Nanyue. After Nanyue first repelled the Han, nearly all of the Yi tribes declared allegiance to Nanyue, and most of them retained that allegiance until Nanyue's demise in 111 BC. During Emperor Wu of Han's final attack on Nanyue, most of the Yi tribes refused to assist in the invasion. One chieftain called Qie-Lan went so far as to openly oppose the move, later killing the emissary sent by the Han to his territory as well as the provincial governor installed in the Qianwei Commandery. Monarchs Archaeological findings The Nanyue Kingdom Palace Ruins, located in the city of Guangzhou, covers 15,000 square metres. Excavated in 1995, it contains the remains of the ancient Nanyue palace. In 1996, it was listed as protected National Cultural Property by the Chinese government. Crescent-shaped ponds, Chinese gardens and other Qin architecture were discovered in the excavation. In 1983, the ancient tomb of the Nanyue King Wáng Mù (王墓) was discovered in Guangzhou, Guangdong. In 1988, the Museum of the Mausoleum of the Nanyue King was constructed on this site, to display more than 1,000 excavated artefacts including 500 pieces of Chinese bronzes, 240 pieces of Chinese jade and 246 pieces of metal. In 1996, the Chinese government listed this site as a protected National Heritage Site. A bronze seal inscribed "Tư Phố hầu ấn" (Seal for Captain of Tu Pho County) was uncovered at Thanh Hoa in northern Vietnam during the 1930s. Owing to the similarity to seals found at the tomb of the second king of Nam Viet, this bronze seal is recognized as an official seal of the Nam Viet Kingdom. There were artifacts that were found in which belonged to the Dong Son culture of northern Vietnam. The goods were found buried alongside the tomb of the second king of Nam Viet. Status in Vietnamese historiography In Vietnam, the rulers of Nanyue are referred to as the Triệu dynasty, the Vietnamese pronunciation of the surname . While traditional Vietnamese historiography considered the Triệu dynasty to be an orthodox regime, modern Vietnamese scholars generally regard it as a foreign regime that ruled Vietnam. The name "Vietnam" is derived from Nam Việt (Southern Việt), the Vietnamese pronunciation of Nanyue. However, it has also been suggested that the name "Vietnam" was derived from