Question: Where are both Heshan, Guangxi and Jian'ou located?

Context paragraphs:
Âu Việt: The Âu Việt or Ouyue () were an ancient conglomeration of upland Yue tribes living in what is today the mountainous regions of northernmost Vietnam, western Guangdong, and northern Guangxi, China, since at least the third century BCE.  In the legends of the Tay people, the western part of Âu Việt's land became the Nam Cương Kingdom, whose capital was located in what is today the Cao Bằng Province of Northeast Vietnam.  The Âu Việt were also referred to as the Kingdom of Eastern Ou (Dong'ou ), as one of the many Yue tribes and kingdoms.  The Western Ou (西甌; ; "Tây" meaning "western") were Baiyue tribes, with short hair and tattoos, who blackened their teeth and are the ancestors of the upland Tai-speaking minority groups in Vietnam such as the Nùng and Tay, as well as the closely related Zhuang people of Guangxi.

Ou Xing: Ou Xing was a bandit from Changsha during the late Han Dynasty of China.  During the reign of Emperor Ling, Ou proclaimed himself a general and rallied an army for a rebellion.  He allied himself with other bandits, Zhou Chou and Guo Shi.  However, Ou's uprising was quelled by Sun Jian, the Prefect of Changsha, on the orders of the Ten Attendants.

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.

Hengfeng–Nanping Railway: Hengfeng–Nanping Railway, also known as the Hengnan Railway (), is a railroad in eastern China between Hengfeng, Jiangxi Province and Nanping, Fujian Province.  The line is 470 km long, including a spur line to Shangrao, and opened in December 1998.  Major cities along route include Hengfeng, Wuyishan, Jianyang, Jian'ou, and Nanping.

Fujian: Fujian (; pronounced ), formerly romanised as Foken, Fouken, Fukien, and Hokkien, is a province on the southeast coast of mainland China.  Fujian is bordered by four provinces: Zhejiang to the north, Jiangxi to the west, Taiwan to the east and Guangdong to the south.  The name Fujian came from the combination of Fuzhou and Jianzhou (a former name for Jian'ou) two cities in Fujian, during the Tang dynasty.  While its population is chiefly of Han origin, it is one of the most culturally and linguistically diverse provinces in China.

Kienning Colloquial Romanized: The Kienning Colloquial Romanized Alphabet (建寧府土腔羅馬字, Gṳ̿ing-nǎing Lô̤-mǎ-cī ), is Romanization system adopted by Western Missionaries to compile the Kienning dialect (modern day Jian'ou City) of the Northern Min language in the Fujian Province of China.

Jianzhou (Fujian): Jianzhou or Jian Prefecture (建州) was a "zhou" (prefecture) in imperial China centering on modern Jian'ou, Fujian, China.  It existed (intermittently) from 621 to 1162.

Jian'ou: Jian'ou () is a county-level city of Nanping in the north of Fujian province, China.

Jian'ou dialect: Jian'ou dialect (Northern Min: Gṳ̿ing-é-dī / 建甌事 ; Chinese: ), also known as Kienow dialect, is a local dialect of Northern Min Chinese spoken in Jian'ou in the north of the Fujian province.  It is regarded as the standard common language in Jian'ou.

Hongjiacun: Hongjiacun () is a residential community in Heshan Subidistrict, Yiyang City, Hunan Province, South Central China.  Located in the north of Heshan District, the community was formed in July 2002, has an area of 2.0 km2 with rough population of 13,698 (2014).

Supporting paragraphs: Heshan, Guangxi Jian'ou
Answer: China