Question: What country does Hezhou and Dongning, Heilongjiang share?

full_context: Document 1: Heilongjiang: Heilongjiang () is a province of the People's Republic of China. Located in the northeastern part of the country, Heilongjiang is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a China–Russia border with Russia to the north and east. The capital and the largest city of the province is Harbin. Among Chinese provincial level Administrative divisions, Heilongjiang is the 6th largest by total area and the 15th most populous.
Document 2: Hunchun: Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture, far eastern Jilin province, Northeast China. It borders North Korea (North Hamgyong province) and Russia (Primorsky Krai), has over 250,000 inhabitants, and covers 5,145 square kilometers. It was capital of Balhae/Bohai Kingdom between 785-793 as "Dongyang". The city's name Hunchun comes from the Manchu language meaning "borderland".
Document 3: Yilan County, Heilongjiang: Yilan County () is under the administration of Harbin, the capital of Heilongjiang province, People's Republic of China. It is more than 240 km to the east-northeast of central Harbin. Its county seat, which is also called Yilan (Yilan Town, "Yilan zhen"), is located near the confluence of the Mudan River (formerly known as the Hurka River) with the Sungari. The easternmost county-level division of Harbin City, it borders Fangzheng County to the southwest, Tonghe County to the west, as well as the prefecture-level cities of Yichun to the north, Jiamusi to the northeast, Qitaihe to the southeast, and Mudanjiang to the south.
Document 4: Heze: Heze () is a prefecture-level city in southwestern Shandong, China. It is home to 8,287,693 inhabitants, of whom 1,346,717 live in the built-up ("or metro") area comprising Mudan District. The westernmost prefecture-level city in Shandong, it borders Jining to the east and the provinces of Henan and Anhui to the west and south respectively. The old name of Heze was Caozhou (曹州 ; Cáozhōu) and now a part of the city bears this name. The first character in the city's name is sometimes incorrectly written as "荷 " instead.
Document 5: Dongxing, Guangxi: Dongxing (,"Vietnamese": Đông Hưng) is a county-level city of Guangxi, People's Republic of China, on the border with Mong Cai of Vietnam.
Document 6: Donggang, Liaoning: Donggang () is a city in the southeast of Liaoning Province in Northeast China. Situated on the coast of the Yellow Sea at the mouth of the Yalu River, it is located near the maritime border with North Korea. Administratively, it is a county-level city of Dandong, which lies 35 km to the northeast.
Document 7: Xinzhou: Xinzhou () is a prefecture-level city occupying the north-central section of Shanxi province, People's Republic of China.
Document 8: Hezhou: Hezhou (贺州 ) is a prefecture-level city in the northeast of the Guangxi Zhuang Autonomous Region, People's Republic of China.
Document 9: Dongning, Heilongjiang: Dongning () is a county-level city of southeastern Heilongjiang province, China. It is under the jurisdiction of the prefecture-level city of Mudanjiang.
Document 10: Cenxi: Cenxi () is a county-level city under the administration of Wuzhou City, in the east of Guangxi, People's Republic of China.
Document 11: Guilin: Guilin, formerly romanized as Kweilin, is a prefecture-level city in the northeast of China's Guangxi Zhuang Autonomous Region. It is situated on the west bank of the Li River and borders Hunan to the north. Its name means "Forest of Sweet Osmanthus", owing to the large number of fragrant sweet osmanthus trees located in the city. The city has long been renowned for its scenery of karst topography and is one of China's most popular tourist destinations.
Document 12: Chongzuo: Chóngzuǒ (; Zhuang: Cungzcoj ) is a prefecture-level city in the south of Guangxi Zhuang Autonomous Region along the Sino-Vietnamese border. It is home to one of China's largest Zhuang populations.
Document 13: Hekou Yao Autonomous County: The Hekou Yao Autonomous County () is an autonomous county in the southern part of the Yunnan province of China. It is part of the Honghe Hani and Yi Autonomous Prefecture and borders the northern Vietnamese town of Lào Cai. It was apparently known as Zhongcheng () during the Tang dynasty.
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: Heshan, Guangxi: Heshan () is a county-level city of central Guangxi, China, located on the lower reaches of the Hongshui River. It is under the administration of Laibin City.
ground_truth: southeastern Heilongjiang province, China.