Hidden in the forests above Shangyun 上允 are the ruins of a Buddhist temple fortress founded during the Qing Dynasty by separatist monks from Jizushan who built a significant religious following by the local Lahu and Dai people.
The Gourd Festival 葫芦节 is the main festival of the Lahu people. In Lancang, its date has been moved into April to coincide with the county's foundation.