is popular in Namling County, and government funding efforts to preserve the tradition were started in 2005. "Xiangba Tibetan play in Namling County of Tibet has a history of more than 700 years. It is one of the four major schools of the blue-mask Tibetan play, and was born in the late 18th century." Local residents preserve "some traditional Tibetan operas such as "Princess Wencheng", "Chimei Gongdan", "Langsa Wenbo" and so on." "Tongdong Gyaibo (1365-1455), the founder of Tibet Opera, was born in Ngamring County. Legend has it that the iron chain bridge over the Xiongqoi River in Namling County was built with funds collected by Tongdong Gyaibo through performances." Namling County and the Xiangqu River Basin were a cultural center of the Supi tribe, known as "The Kingdom of Women", and "one of the earliest tribes in Tibet." After "the end of the sixth century, the Supi tribe moved its political center to the Lhasa River Basin." As of 1999, the county was home to the critically endangered Golden-headed box turtle (Cuora aurocapitata). Monasteries Yungdrungling Monastery "is located at the foot of the Yulha Jiesam mountain in the Numa village in Namling County about 90 km. from Xigazê. The monastery is surrounded by dense wood ... it is one of the four major monasteries of Bon religion in Tibet." Danag Monastery, over 800 years old, is located in Danag Village. The remains of the Dingma Monastery, an 11th-century Kadampa monastery, are located on a hill in the Oyuk Valley. It was founded by Ram Dingma Deshek Jungne, a student of Geshe Potowa. The Gongon Lhakhang temple, in Oyuk Township, was said to be built by Songtsen Gampo, and frequented by Padmasambhava and his students Namkhai Nyingpo and King Trisong Detsen in the 8th century. Oyuk Chigong or Oyuk Jara Gon is a hermitage located at Jarasa in lower Oyuk. It is "the abode or castle of the protector deity Dorje Lekpa: guardian of the Dzogchen teachings." The Gelukpa monasteries of Drungzhi and Sogchen are located in the Tobgyel Valley. Gadan Chiokorling Monastery, located from the county center, originally called Gegon Songrapling Monastery, became part of the Gelgupa Sect during the reign of the 5th Dalai Lama. Notable people Mokchokpa Rinchen Tsondrü (1110-1170?) of the Shangpa Kagyu was born in the Lhabu grasslands of the county's Shang Valley. Lobsang Yeshe, Fifth Panchen Lama (1663–1737) was born in Namling County. Tenpai