Chí Linh is a city located in the Hải Dương Province within the Red River Delta region of Vietnam. It was originally established as Chí Linh District before being upgraded to a district-level town in 2010, and subsequently becoming the second provincial city of Hải Dương Province in 2019.
The city is characterized by its diverse geography, featuring hills, mountains, and forests. It serves as a location where six rivers converge, and its capital is Sao Đỏ.