1. Different ruling areas: Zhao Tuo, the king of South Vietnam, was originally a general of the Qin Dynasty and established the country of South Vietnam in Lingnan. His rule mainly includes parts of Guangdong, Guangxi and Vietnam today. Pirog, the king of Yunnan, was the leader of Yunnan in the Tang Dynasty, and his rule was mainly in Yunnan.
2. The historical background is different: the establishment of Nanyue State began at the end of Qin and the beginning of Han, and Piluoge, the king of Yunnan, was the son of St. Lopi. Nanzhao Kingdom was established in Yunnan during the Tang Dynasty, and was later named King of Yunnan by the Tang Dynasty.