Question: In which country will you find the county-level city Gaozhou and the Jiangdu District which was formerly a county-level city?

Context articles: Gaozhou
Jiaonan
Yangzhou Taizhou International Airport
Jiaozhou City
Mangshi
County-level city
Yizhou District, Hami
Jiangdu District
Taobei District
Mengzi City

Gaozhou is a county-level city in southwestern Guangdong Province, China.
 Formerly the primary city in the area, it is now administered as part of the prefecture-level city of Maoming.
 At the time of the 2010 census, Gaozhou had a population of 1,288,665 living in its 3270.8 sqkm territory.
 The locals speak a variation of the Gaozhou dialect.
 It is best known in China for being the ancestral home of Leo Ku.
Jiaonan () was a former county and county-level city under the administration of Qingdao, Shandong, China, located in the southwestern portion of Qingdao along the Yellow Sea coast.
 In 1945, as Zhushan County (珠山縣 ) it was carved from Jiao County and Qingdao City, and in 1946, renamed as Jiaonan County, deriving its name from its southern location relative to Jiaozhou Bay.
 In 1990, it was upgraded to a county-level city.
 Jiaonan has 7 subdistricts and 11 towns.
 In December 2012, it was merged into Huangdao District.
Yangzhou Taizhou International Airport (IATA: YTY, ICAO: ZSYA) , often abbreviated to Yangtai Airport, is an airport serving the cities of Yangzhou and Taizhou in China's Jiangsu Province.
 It is located in the town of Dinggou in Jiangdu District, Yangzhou, 30 kilometers from the center of Yangzhou and 20 kilometers from Taizhou.
 Another major city, Zhenjiang, is also nearby across the Yangtze River.
Jiaozhou (), formerly Jiaoxian or Jiao County, is a county-level city of Qingdao sub-provincial city, Shandong Province, China.
 It gained its current county-level city designation in 1987.
 It has an area of 1,313 km and a population at the 2000 Census of 783,478.
Mangshi or Mangshi City (; Thai: เมืองข้อน ), formerly named Luxi City (), is a county-level city of Dehong Prefecture, in the west of Yunnan province, People's Republic of China.
 It is the prefectural seat, and in 1996, Luxi was upgraded to a county-level city.
A county-level municipality (), county-level city, or county city is a county-level administrative division of mainland China.
 County-level cities are usually governed by prefecture-level divisions, but a few are governed directly by province-level divisions.
 Formerly known as prefecture-controlled city (1949-1970: ; 1970-1983: ).
Yizhou (; ), is the central district of the Hami prefecture-level city, in Xinjiang Uyghur Autonomous Region, China.
 Its population was 472,175 at the end of 2010.
 It was known as Hami county-level city until February 2016, when it was merged with the Hami Prefecture to form the Hami prefecture-level city, and the county-level city was renamed Yizhou District.
Jiangdu District () is one of three districts of Yangzhou, Jiangsu province, China.
 It was a county-level city under the administration of Yangzhou until November 2011, when it was converted into a district.
Taobei District () is the main urban district of the prefecture-level city of Baicheng in China's northeastern Jilin province.
 It was formerly the county-level city of Baicheng until 1993, when the former Baicheng Prefecture became Baicheng prefecture-level city, while the prefectural capital Baicheng county-level city was renamed Taobei District.
Mengzi () is a city in the southeast of Yunnan province, People's Republic of China.
 Administratively, it is a county-level city and the seat of the Honghe Hani and Yi Autonomous Prefecture, located about 175 km south-southeast of the provincial capital of Kunming.
 It is situated in the centre of a fertile valley basin on a plateau 1000 m above sea level.
 Mengzi was formerly Mengzi County (蒙自县 ) until October 2010, when it was upgraded to a county-level city.