(Perfume river) Deriving from Truong Son mountain, the two springs Ta Trach and Huu Trach meet at the junction of Tuan (or ‘Bang Lang’ used in administrative speech) and create the Huong river.

The river then flows in South-North direction past the temples of Hon Chen and Ngoc Tran and then turns North-West, meandering through the Nguyet Bieu and Luong Quan plains. Continuing on, the Huong river then flows to the North-East to Hue city, only an echo of Truong Son mountain, and passes the place where Nguyen emperors spend their rest in peace forever.