Sanya () is the southernmost city on Hainan Island, and one of the four prefecture-level cities of Hainan Province, in Southeast China.
The Mandarin Oriental, Sanya () is a luxury resort located in Sanya City on the southeastern coast of the island of Hainan, People's Republic of China.
 The 296-room resort opened in 2009 and is managed by Mandarin Oriental Hotel Group.
 The hotel contains 10 restaurants and bars as well as the 3200 m2 Spa at Mandarin Oriental, Sanya.
Changyi (昌邑 ; pinyin: "Chāngyì") is a county-level city of Weifang in the northwest corner of Shandong province, People's Republic of China.
 The city is 1627.5 square kilometers in area, with a household population of 581,000 as of 2010.
 The city is under the administration of the Changyi Municipal People's Government, with 3 neighborhoods, 6 towns, 691 administrative villages, and one special economic development zone.
 Changyi has a long history that extends back into the Spring and Autumn period
Sanya Phoenix International Airport (IATA: SYX, ICAO: ZJSY) is an airport serving the city of Sanya in Hainan, the southernmost province of China.
 It is located about 15 km northwest of the city center.
Bo'ao () is a town located next to the eastern coastal city of Qionghai in Hainan Province, People's Republic of China, near the mouth of the Wanquan River where it discharges into the South China Sea.
 The town is 17 km away from Qionghai, 105 km away from Haikou and 180 km away from Sanya.
 Bo'ao is famous for the Boao Forum for Asia, an international organisation whose venue is permanently located on Bo'ao's largest island, Dongyu Island ().
Jiuzhan Railway Station is a railway station of Changchun–Tumen Railway.
 The station located in the Changyi District of Jilin, Jilin province, China.
Sanya University () is an undergraduate university located in Sanya, Hainan, China.
 It comprises 13 undergraduate schools.
Sanya Hongtangwan International Airport is an airport being built to serve the city of Sanya in Hainan Province, China.
 It will be located on an artificial island in Hongtang Bay, about 20 km west of Sanya.
 Construction began in 2017, and the airport is expected to be opened by December 31, 2020.
The Haitian-Qingdao Railway or Haiqing Railway () is a railway under construction in Shandong Province, China.
 The single-track railway will connect Haitian Station in Changyi on the Dezhou-Longkou-Yantai Railway in northern Shandong with Zhilanzhuang Station in Gaomi on the Jiaozhou-Jinan Railway near the Jiaozhou Bay in southern Shandong.
 The 90.3 km rail line will become part of the Qingdao rail hub in southern Shandong.
 Construction began in 2009 and is expected to be completed in 2012.
Sanya Bay () is one of the five major bays in Sanya, Hainan Province, China.
 Located at the southern coast of Hainan, directly south of Sanya city, it has a 22 km beach.
 It is bordered by a peninsula at the east side.
 Within the bay are two islands called Xidao and Dongdao.
 The artificial resort Phoenix Island is located in the bay near the eastern end of the beach.

Question: Are Changyi, Shandong and Sanya both located in China?
Answer: yes