Leiyang in the context of "Subdistricts of China"

Cai Lun (Chinese: 蔡伦; courtesy name: Jingzhong (敬仲); c. 50–62 – 121 CE), formerly romanized as Ts'ai Lun, was a Chinese eunuch court official of the Eastern Han dynasty. He occupies a pivotal place in the history of paper due to his addition of pulp via tree bark and hemp ends which resulted in the large-scale manufacture and worldwide spread of paper. Although traditionally regarded as the inventor of paper, earlier forms of paper have existed since the 3rd century BCE, so Cai's contributions are limited to innovation, rather than invention.

Born in Guiyang Commandery [zh] (in what is now Leiyang), Cai arrived at the imperial court in Luoyang by 75 CE, where he served as a chamberlain for Emperor Ming, and then as Xiao Huangmen, an imperial messenger for Emperor Zhang. To assist Lady Dou in securing her adopted son as designated heir, he interrogated Consort Song and her sister, who then killed themselves. When Emperor He ascended the throne in 88 CE, Dou awarded Cai with two positions: Zhongchang shi  [zh], a political counselor to the emperor that was the highest position for eunuchs of the time, and also as Shangfang Ling, where Cai oversaw the production of instruments and weapons at the Palace Workshop.

Changning is a county-level city in Hunan Province, China, under the administration of Hengyang prefecture-level City. Located on the south-central part of the province, the city is bordered to the north by Qidong and Hengnan Counties, to the east by Leiyang City, to the south by Guiyang County, and to the west by Qiyang County. Changning City covers 2,046.6 km (790.2 sq mi) with a registered population of 958,988 and resident population of 810,447 (as of the 2010 census). The city has three subdistricts, 14 towns and four townships under its jurisdiction. The government seat is Yiyang Subdistrict (宜阳街道).

Guiyang County (simplified Chinese: 桂阳县; traditional Chinese: 桂陽縣; pinyin: Guìyáng Xiàn) is a county in Hunan Province, China. It is under the administration of Chenzhou prefecture-level city.

Located on the southern part of the province, it is adjacent to the east of the city proper in Chenzhou. The county is bordered to the north by Changning and Leiyang Cities, to the west by Xintian and Jiahe Counties, to the south by Linwu County, and to the east by Suxian and Beihu Districts. Guiyang County covers an area of 2,958.3 km (1,142.2 sq mi), and as of 2015, It had a registered population of 904,400 and a resident population of 711,700. The county has 17 towns, three subdistricts and two townships under its jurisdiction, with the county seat at Longtan Subdistrict (龙潭街道).

Yongxing County (simplified Chinese: 永兴县; traditional Chinese: 永興縣; pinyin: Yǒngxīng Xiàn) is a county in Hunan Province, China. It is under the administration of the prefecture-level city of Chenzhou.

Located on the south eastern part of the province, it is adjacent to the north of the city proper in Chenzhou. The county borders to the northwest by Leiyang City, to the southwest by Guiyang County, to the south by Suxian District, to the southeast by Zixing City, and to the northeast by Anren County. Yongxing County covers an area of 1,979 km (764 sq mi), and as of 2015, it had a registered population of 696,000 and a resident population of 542,800. The county has 11 towns and four townships under its jurisdiction, and the county seat is Bianjiang Town (便江镇).

Anren County (simplified Chinese: 安仁县; traditional Chinese: 安仁縣; pinyin: Ānrén Xiàn) is a county in Hunan Province, China. It is under the administration of Chenzhou prefecture-level City.

Located on the southeast of the province, it is the northernmost county-level division of Chenzhou City. The county is bordered to the north by Hengdong and You Counties, to the east by Chaling and Yanling Counties, to the south and southwest by Yongxing County, and to the west by Leiyang City and Hengnan County. Anren County covers an area of 1,462.1 km (564.5 sq mi), and as of 2015, it had a registered population of 465,500 and a resident population of 390,500. The county has five towns and eight townships under its jurisdiction, and the county seat is Yonglejiang.

Caizichi Subdistrict (Chinese: 蔡子池街道; pinyin: Càizǐchí Jiēdào) is a subdistrict and the seat of Leiyang City in the province of Hunan, China. The subdistrict has an area of 52 km (20 sq mi) with a population of 181,173 (as of 2010 census). It has 10 communities under its jurisdiction.