Editing Hefei (section)

==Geography==
{{expand section|date=May 2013}}
Hefei is located {{convert|130|km|0}} west of [[Nanjing]] in south-central Anhui. [[Chao Lake]], a lake {{convert|15|km|0|abbr=on}} southeast of the city, is one of the largest [[fresh water]] lakes in China. Though, the lake has unfortunately been polluted with [[nitrogen]] and [[phosphorus]], in recent decades,<ref>{{Cite journal|last1=Wang|first1=Yan-Ping|last2=Xu|first2=Wei-Wei|last3=Han|first3=Chao|last4=Hu|first4=Wei-Ping|date=8 February 2021|title=[Distribution of Nitrogen and Phosphorus in Lake Chaohu Sediments and Pollution Evaluation]|url=https://pubmed.ncbi.nlm.nih.gov/33742864/|journal=Huan Jing Ke Xue = Huanjing Kexue|volume=42|issue=2|pages=699–711|doi=10.13227/j.hjkx.202006216|issn=0250-3301|pmid=33742864}}</ref> the situation is improving due to efforts by both the government and the people.