Question: Which is a prefecture level city, Haidong or Fengzhen or both?

Context paragraphs:
Tacheng Prefecture: Tacheng (Tarbagatay) Prefecture is located in northern Xinjiang, People's Republic of China.  It has an area of 98,824 km² and a population of 892,397 (2000).  It is a part of Ili Kazakh Autonomous Prefecture.  The prefecture level city of Karamay forms a separate enclave in the middle of Tacheng.

Wenxi County: Wenxi County () is a county in southern Shanxi province of China.  It is under the administration of the prefecture level city of Yuncheng.  As of 2002 it had a population of roughly 380,000.

Fengzhen: Fengzhen (Mongolian: ; Chinese: 丰镇 "Fēngzhèn") is a county-level city within Ulaan Chab prefecture of Inner Mongolia in the China.

Guang'an: Guang'an () is a prefecture-level city in eastern Sichuan province.  It is most famous as the birthplace of China's former paramount leader Deng Xiaoping.  Guang'an lies between the hills of central Sichuan and the gorges area of the east.Guang'an is the only "Sichuan Chongqing Cooperation Demonstration Zone" in Sichuan and the nearest prefecture level city from the main city of Chongqing.  It has been incorporated into the 1 hour economic circle of Chongqing.Because of its strategic location, it is called the "Gateway to Eastern Sichuan". Its population in 2014 was 3,231,600.

Wu'an: Wu'an () is a County-level city in the prefecture level city of Handan, Hebei province, China.

Zhaoqing University: Zhaoqing University () is a public university based in the Duanzhou District of the prefecture level city of Zhaoqing, Guangdong Province, China.  Zhaoqing University is a provincial comprehensive university which enrolls students on four-year degree programmes.

Haidong: 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.

Fushun: Fushun (, formerly romanised as "Fouchouen", using French spelling, also as Fuxi (撫西 )) is a prefecture level city in Liaoning province, China, about 45 km east of Shenyang, with a population of 2,138,090 inhabitants (2010 census) and a total area of 11,272 km2 , 714 km2 of which is the city proper.  Situated on the Hun River ("muddy river"), it is one of the industrial and economic development hubs in Liaoning.

Fu'an:    (; Foochow Romanized: Hók-ăng-chê; sometimes "Fu An") is a county-level city of Ningde prefecture level city, in northeast Fujian province, PRC, some 150 km away from the provincial capital Fuzhou.

Fuding:    () is a county-level city in northeastern Ningde prefecture level city, on Fujian's border with Zhejiang province.

Supporting paragraphs: Haidong Fengzhen
Answer: Haidong