Introduction to Dadu Ka: Dadu Ka means "horse herding place". It used to be a place where villagers kept their horses. From here we enter the Yarlung Zangbo Grand Canyon. There is also the ruins of an ancient castle on the banks of the Daduka River, which is very spectacular. It was the manor castle of the Gongbu leader here in the past. It was later destroyed by artillery fire during the war with King Bomi.