Editing Cai Lun (section)

===Birth and background===
Cai Lun was born in [[Guiyang Commandery]] ({{lang|zh-Hant|桂阳郡}}; modern-day [[Leiyang]], [[Hunan]] province){{sfn|Tsien|1985|p=[https://books.google.com/books?id=Lx-9mS6Aa4wC&pg=PA40 40]}}<ref group="‡">{{harvtxt|''Hou Hanshu'' (78/68:2513–14)}}: "{{lang|zh-Hant|蔡伦字敬仲，桂陽人也。}}"<br />"Cai Lun's courtesy name was Jingzhong, and he was from Guiyang Commandery."</ref> in the [[Eastern Han dynasty]] (25–220 CE).{{sfnm|1a1=Holdstock|1y=2018|1p=[https://books.google.com/books?id=7-mKDwAAQBAJ&pg=PA101 101]|2a1=Provisional Urban Council|2a2=Hong Kong Museum of History|2y=1998|2p=60}}{{efn|The [[Han dynasty]] {{ill|桂阳郡|zh|lt=Guiyang Commandery}} is not to be confused with the unrelated modern-day [[Guiyang County]] or the city of [[Guiyang]].}} His exact year of birth is unknown; estimates include {{circa|50}},{{sfn|Li|Denecke|Tian|2017|p=[https://books.google.com/books?id=tO4wDgAAQBAJ&pg=PA51 51]}} {{circa|57}},{{sfn|Day|McNeil|1996|p=[https://archive.org/details/isbn_9780415060424/page/122/mode/2up 122]}} and {{circa|62}}.{{sfn|''Britannica''|2020}}{{efn|Sinologist [[Rafe de Crespigny]] suggested that Cai was the same age as [[Zheng Zhong]], a fellow [[eunuch]],{{sfn|de Crespigny|2016|p=[https://books.google.com/books?id=jSJ4DgAAQBAJ&pg=PA176 176]}} whose birth year is also unknown.{{sfn|de Crespigny|2007|p=[https://books.google.com/books?id=49OvCQAAQBAJ&pg=PA1130 1130]}}}} Other than being born into a poor family, virtually nothing is known of his early life.{{sfn|Narita|1966|pp=1–2}} Guiyang was a southern [[Commandery (China)|commandery]], where [[Han Chinese]] had immigrated for hundreds of years to plant and cultivate rice.{{sfn|Monro|2016|p=[https://books.google.com/books?id=-Y6mCQAAQBAJ&pg=PA57 57]}} Legends suggest there was a pool near his home, south of which was a stone mortar that Cai would later use for [[papermaking]].{{sfnm|1a1=Tsien|1y=1985|1p=[https://books.google.com/books?id=Lx-9mS6Aa4wC&pg=PA107 107]|2a1=Hunter|2a2=Hunter|2y=1978|2p=[https://books.google.com/books?id=1sEp3rtK994C&pg=PA52 52]}}