Join 科学与技术 upcoming events being held in Amphoe Phai Sali. Amphoe Phai Sali is a district in the Loei province of Thailand, known for its picturesque landscapes of mountains, forests, and rice fields, as well as its rich cultural heritage exemplified in the Phu Luang Wildlife Sanctuary and the annual Phi Ta Khon Festival, a lively event that showcases traditional masked dances and parades.