Question: Are Yushu City, Qinghai and Mianzhu both located in China?
Context: The Qinghai–Tibet War was a conflict that took place during the Sino-Tibetan War.  A rebellion led by the Dalai Lama with British support wanted to expand the original conflict taking place between the Tibetan Army and Liu Wenhui (Sichuan clique) in Xikang, to attack Qinghai, a region northeast of Tibet.  Using a dispute over a monastery in Yushu in Qinghai as an excuse in 1932, the Tibetan army attacked.  Qinghai Muslim Gen. Ma Bufang overran the Tibetan armies and recaptured several counties in Xikang province.  Shiqu, Dege and other counties were seized from the Tibetans.  The war against the Tibetan army was led by the Muslim General Ma Biao.  The Tibetans were pushed back to the other side of the Jinsha river.  The Qinghai army recaptured counties that had been controlled by the Tibetan army since 1919.  The victory on the part of the Qinghai army threatened the supply lines to Tibetan forces in Garze and Xinlong.  As a result, this part of the Tibetan army was forced to withdraw.  Ma and Liu warned Tibetan officials not to dare cross the Jinsha river again.  By August the Tibetans lost so much territory to Liu Wenhui and Ma Bufang's forces that the Dalai Lama telegraphed the British government of India for assistance.  British pressure led China to declare a cease-fire.  Separate truces were signed by Ma and Liu with the Tibetans in 1933, ending the fighting.  The British had backed up the Tibetans during the war.  After their war the victory over the Tibetans was celebrated by Xikang and Qinghai soldiers. Surmang (or Zurmang) refers to a vast alpine nomadic and farming region, historically a duchy under the King of Nangchen, with vast land holdings spreading over what is today the Tibet Autonomous Region and Qinghai Province.  In Tibetan King of Nangchen's realm was called the "nyishu dza nga" or the 21 (provinces).  Since 1959 it is mainly within the Yushu Tibetan Autonomous Prefecture of Qinghai province in China (historically part of Kham, eastern Tibet).  Yushu Prefecture is 97% ethnic Tibetan.  The Surmang region is one of the poorest regions in China ranking it among the world's highest infant and maternal mortality, almost 100% illiteracy, and personal income of less than US 14¢/day.  It is part of the catchment in China of the 30 million ultra-poor. Yushu is a county-level city of Yushu Tibetan Autonomous Prefecture in southern Qinghai province, China.  It comprises a surface area of 13462 km² .  In 2010, the overall city's population was 120,447 and 56,802 live within the city core.  Yushu is the fourth largest city in Qinghai. Qinghai Lake (), Kokonor (Mongolian: Хөх нуур ) or Tso Ngonpo (Tibetan: མཚོ་སྔོན་པོ། ) is the largest lake in the People's Republic of China.  Located in Qinghai province on an endorheic basin, Qinghai Lake is classified as a saline and alkaline lake.  Qinghai Lake has a surface area of 4317 km2 ; an average depth of 21 m , and a maximum depth of 25.5 m as measured in 2008.  The current Chinese name "Qinghai," the older Mongolian name "Kokonor", and the Tibetan name translate to "Green Sea", "Blue Lake" and "Teal Sea", respectively.  Qinghai Lake is located about 100 km west of the provincial capital of Xining (Tib:Ziling ཟི་ལིང་།) at 3205 m above sea level in a hollow of the Tibetan plateau.  Twenty-three rivers and streams empty into Qinghai Lake, most of them seasonal.  Five permanent streams provide 80% of total influx. Triplophysa hialmari is a species of stone loach endemic to China.  Its type locality is "Ba-tshu River", a tributary of the Yangtze River near Yushu City, Qinghai. Mianzhu () is a county-level city of Deyang, Sichuan province in Southwest China. The 2010 Yushu earthquake struck on April 14 and registered a magnitude of 6.9M (USGS, EMSC) or 7.1M (CEA, CENC).  It originated in Yushu, Qinghai, China, at 7:49 am local time.  According to the Xinhua News Agency, 2,698 people have been confirmed dead, 270 missing, and 12,135 injured of which 1,434 are severely injured.  The epicenter was located in Rima village (日玛村/日麻村), Upper Laxiu township (上拉秀乡) of Yushu County, in remote and rugged terrain, near the border of Tibet Autonomous Region.  The epicenter is about 30 km from Gyêgu town or Jyekundo, the seat of Yushu County, and about 240 km from Qamdo.  The epicenter was in a sparsely populated area on the Tibetan plateau that is regularly hit by earthquakes. The Yushu Batang Airport () (IATA: YUS, ICAO: ZLYS) is the airport serving Yushu City in Qinghai Province, China.  It is located 18 kilometers to the south of the city center, Gyêgu, at the 3,890 meters elevation about the sea level, which makes it the highest civilian airport in Qinghai Province, and one of the highest in the world. The Batang River (Chinese: 巴塘河 ,  "Batánghé") or Zha Chu (Chinese: 札曲 ,  "Zháqū"; Tibetan: དཔལ་ཆུ། ,  "Dpal Chu",  "Bä Qu") is an 88 km long river in Yushu Tibetan Autonomous Prefecture, south-eastern Qinghai province, in the People's Republic of China.  The river begins in the highlands of central Yushu County and flows easterly through the townships of Batang (巴塘乡 ) and Gyêgu before meeting the Tongtian River at the border of Yushu County with Chindu County.  The Tongtian is the main stem of the Yangtze River, and its confluence with the Batang is traditionally considered to mark the beginning of the Jinsha section of the Yangtze.  The Batang River's watershed covers 2466 km2 and its average flow is 29 m³ per second. Gyêgu is a town in Yushu City, Yushu Tibetan Autonomous Prefecture, Qinghai, China.  Gyêgu is the modern town which developed from the old Tibetan trade mart called Jyekundo or Gyêgudo in Tibetan and most Western sources.  The town is also referred to as Yushu, synonymous with the prefecture of Yushu and the city of Yushu.
Answer: yes