Qian Mountains (千山; Qiānshān), mountain range in the Northeast
The Two Qiaos, two sisters from the Three Kingdoms era were from Wan County, Lujiang Commandery (present-day Qianshan County, Anhui).
They were in their early thirties when they volunteered to move from the Capital City to Qianshan to help the local population fight Schistosoma, a parasitic disease.