Question: What  is a district of the city of Shantou, Chenghai District or Gaoping?

Context paragraphs:
Longdu: Longdu () is a town of Chenghai District, in the northern suburbs of Shantou, in eastern Guangdong province, China.  , It has 1 residential community (社区) and 14 villages under its administration, and a hukou population of 74,000 living in an area of 34 km2 .

North Sichuan Medical University: North Sichuan Medical University (), previously North Sichuan Medical College (NSMC), is a provincial medical school with campuses located in Shunqing District and Gaoping District, Nanchong city, Sichuan Province, China.

Jinsha Subdistrict: Jinsha () is a subdistrict of the Jinping District, Shantou City, Guangdong Province, China.

Lim Nee Soon: Lim Nee Soon (; 12 November 1879 – 20 March 1936) was a Singaporean merchant who promoted social and community matters, and was a respected community leader in Singapore.  Lim was of Chinese Peranakan descent, with ancestry from Chenghai District, Shantou in Guangdong, China.

Gaoping: Gaoping () is a county-level city in Shanxi Province, China with a history stretching back to the Warring States period (403–221 BCE).  Part of the city was formerly known as Changping where a noted battle took place in 260 BCE between forces from the rival States of Qin and Zhao.

Chenghai District: Chenghai (; Pinyin: "Chénghǎi"; postal: Tenghai; Teochew: Thěng Hài) is a district of the city of Shantou, Guangdong Province, China.

Shantou Experimental School: Shantou Experimental School (汕头市 实验 学校 Shàn-tóu-shì shí-yàn xué-xiào) is a public school, located in Longhu District, within the city proper of Shantou, Guangdong, China.

Feixia Middle School: Feixia Middle School is a public middle school in Jinping District, Shantou city, Guangdong province, China found in 1982.  It's a highest school of province level, and the acknowledged best secondary school in Shantou.  Many of there graduate students go to Jingshan High School, but few of them will get chance to study in Temasek Secondary School in Singapore.

Supporting paragraphs: Gaoping Chenghai District
Answer: Chenghai