Question: Which is a higher level city, Yuxi or Lufeng, Guangdong?

full_context: Document 1: Luoding: Luoding, formerly romanized as Loting, is a county-level city in western Guangdong, China. It is administered as part of Yunfu.
Document 2: Wenling: Wenling (Wenling dialect: Uen-lin Zy ] ; ) is a coastal county-level city in the municipal region of Taizhou, in southeastern Zhejiang province, China. It borders Luqiao and Huangyan to the north, Yuhuan to the south, Yueqing to the west, looks out to the East China Sea to the east. Wenling locates on 28°22'N, 121°21'E, approximately 300 km south of Shanghai.
Document 3: Lufeng, Guangdong: Lufeng, formerly romanized as Lukfung, is a county-level city in Guangdong, China, administered as a part of the prefecture-level city of Shanwei. It lies on the mainland on coast of the South China Sea east of Hong Kong.
Document 4: Yuxi: Yuxi () is a prefecture-level city in the Yunnan province of the People's Republic of China. The administrative center of Yuxi is Hongta District. Yuxi is approximately 90 km south of Kunming.
Document 5: Xuanwei: Xuanwei (Chinese: 宣威; Pinyin: Xuānwēi) is a county-level city, under the jurisdiction of Qujing, in Yunnan Province, China.
Document 6: Guangdong: Guangdong () is a province in South China, located on the South China Sea coast. Traditionally romanised as Canton or Kwangtung, Guangdong surpassed Henan and Sichuan to become the most populous province in China in January 2005, registering 79.1 million permanent residents and 31 million migrants who lived in the province for at least six months of the year; the total population was 104,303,132 in the 2010 census, accounting for 7.79 percent of Mainland China's population. The provincial capital Guangzhou and economic hub Shenzhen are among the most populous and important cities in China. The population increase since the census has been modest, the province at 2015 had 108,500,000 people.
Document 7: Xingyi, Guizhou: Xingyi () is a county-level city in the Qianxinan Buyei and Miao Autonomous Prefecture of Guizhou Province in southern China.
Document 8: Lo Wu: Lo Wu or Lowu is an area in North District, New Territories, Hong Kong. It lies on the border between Hong Kong and mainland China, specifically the Luohu District of Shenzhen in mainland China. The area is most notable as the location of the most heavily used immigration control point for passengers travelling to and from mainland China. It is where the Lo Wu Station is located.
Document 9: Pu'er City: Pu'er () is a prefecture-level city in southern Yunnan Province, China. The name Pu'er dates back to 1729, but was changed to Simao () in 1950 after the Communist Revolution. In 2007, the original name of Pu'er was restored. This change had an effect on the size of the official Pu'er tea production area, a major regional product. The urban administrative center of Pu'er is Simao District, which is also the former name of the prefecture-level city itself. A major downturn in the price of tea in 2007 caused severe economic distress in the area. The price of Pu'er has since recovered and Pu'er tea still contributes much to the income of the area.
Document 10: Lianzhou: Lianzhou (), formerly Lian County or Lianxian (postal: Linhsien), is a county-level city in northern Guangdong Province, China, under the administration of the prefecture-level city of Qingyuan. It is known as the host city of the Lianzhou International Photography Festival (LIPF) and as a historic and cultural landmark of Guangdong Province.
Document 11: Yuexiu District: Yuexiu District is a district in Guangzhou, Guangdong, China, located west of the Tianhe District and east of the Liwan District. It is the commercial, political and cultural centre of Guangdong and noted for its high quality education. The Guangdong provincial government and the Guangzhou city government are both located in the Yuexiu District. Established in 1960, the district absorbed the former Dongshan District in May 2005 along with several former subdistricts of the Baiyun and Tianhe district
Document 12: Mangshi: 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.
Document 13: Mengzi City: 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.
Document 14: Dongfang, Hainan: Dōngfāng () is one of the seven county-level cities of Hainan province, China. Although called a "city", Dongfang refers to a large land area in Hainan - an area which was once a county. Within this area is the main city, Dongfang City. It is located on the western coast of Hainan Island facing Vietnam across the Gulf of Tonkin, and in 2004 had a population of 435,000.
Document 15: Jiangcheng Hani and Yi Autonomous County: Jiangcheng Hani and Yi Autonomous County () is an autonomous county under the jurisdiction of Pu'er City, in southern Yunnan, China, bordering Laos and Vietnam to the south, making it the only county in the province to border more than one country. By road, its seat, the town of Menglie (勐烈镇 ), is 520 km from Kunming and 145 km from Simao District, the municipal seat of Pu'er.
ground_truth: Lufeng