 Theingaba decided not to support Pinya's war effort.The vassal ruler not only refused to provide his share of manpower to Pinya, as vassals were required to do, but also decided to go on the offensive.As the Maw Shans began their raid of Sagaing in late 1358, he raided the five key irrigated zones south of Pinya, up to Yamethin, 200 km north of Toungoo.