Question: Are both Haidong and Yichun, Heilongjiang in China?

Context articles: Sanhe, Qinghai
Haidong
Henan Airlines Flight 8387
Yichun, Heilongjiang
Yichun Lindu Airport
Yichun, Jiangxi
Dongsheng Subdistrict, Yichun District
Dongsheng Subdistrict, Nancha District
Yichun Mingyueshan Airport
Yichun District

Sanhe () is a town of Ping'an District, Haidong, Qinghai, People's Republic of China, located 16 km southwest of downtown Haidong and 14 km southwest of Xining Caojiabao Airport as the crow flies.
 , it has one residential community (居委会 ) and 18 villages under its administration.
Haidong (; Wylie: Haitung) is a prefecture-level city of Qinghai province in Western China.
 Its name literally means "east of the (Qinghai) Lake."
 On 8 February 2013 Haidong was upgraded from a prefecture () into a prefecture-level city.
 Haidong is the second largest city in Qinghai after Xining.
Henan Airlines Flight 8387 (VD8387/KPA8387) was a domestic flight operated by Henan Airlines from Harbin Taiping International Airport to Yichun Lindu Airport, both located in Heilongjiang province, China.
 On the night of August 24, 2010, the Embraer E-190-100 LR operating the route crashed on approach to Yichun Lindu with 91 passengers and 5 crew members on board.
 This was the first hull-loss and the first accident with fatalities involving an Embraer E-190.
Yichun () is a prefecture-level city on the Songhua river in Heilongjiang province, People's Republic of China.
 The city is separated from Russia by the Amur River and has an international border of 246 km .
 At the 2010 census, Yichun has a total population of 1,148,126 while 729,202 people live in 15 districts separated by forests.
 The greening rate of Yichun is up to 83%.
 The nickname of Yichun is Lindu ().
Yichun Lindu Airport (IATA: LDS, ICAO: ZYLD) is an airport serving the city of Yichun in northeast China's Heilongjiang Province.
 It started operations in August 2009, and is capable of serving 142,000 passengers a year.
 It incorporates a runway measuring 2300 m and is located in a forest approximately 9 km from downtown Yichun.
Yichun (; postal: Ichun) is a mountainous prefecture-level city in western/northwestern Jiangxi Province, China, bordering Hunan to the west.
 Yichun literally means "pleasant spring".
 It is located in the northwest of the province along a river surrounded by mountains.
 Yichun has a history of over 2,200 years.
 It was established in 201 BC during the Han Dynasty.
 Yichun has a profound Buddhist culture.
 "Can Lin Qing Gui", the monastic rules for Buddhists at the Buddhist temple, originated from Yichun.
 Yichun is also the birthplace of many famous literary figures, such as Tao Yuanming and Deng Gu, both of whom are great poets from ancient times.
Dongsheng Subdistrict () is a subdistrict of Yichun District, in the eastern outskirts of the city proper of Yichun, Heilongjiang, People's Republic of China.
 , it has 3 residential communities (社区) and 4 villages under its administration.
Dongsheng Subdistrict () is a subdistrict of central Nancha District, Yichun, Heilongjiang, People's Republic of China, about 75 km southeast of the city proper of Yichun.
 , it has 6 residential communities (社区) under its administration.
Yichun Mingyueshan Airport (IATA: YIC, ICAO: ZSYC) is an airport serving the city of Yichun in Jiangxi Province, China.
 It is located in Hutian Town, Yuanzhou District.
 As the only airport in western Jiangxi, it also serves the nearby cities of Pingxiang and Xinyu in addition to Yichun, with a total population of 10 million.
 It is named after Mingyueshan (Moon Mountain), a national forest park near Yichun.
 Construction of the airport began on 26 July 2009.
 Originally scheduled to open in 2011, the airport opened on 26 June 2013.
The district of Yichun (伊春区 ; pinyin : Yīchūn Qū) is an administrative subdivision of the province of Heilongjiang, China.
 It is under the jurisdiction of the prefecture-level city of Yichun.