What were the longest-lived vassal states in the Warring States Period?

Weiguo is the longest-lived vassal state. It was 838 years before and after the founding of the People's Republic of China, and there were 35 princes. Uncle Kang made the capital sing when the People's Republic was founded. When Wei successfully moved his capital to Diqiu in 629 BC, divination said that he could establish his country here for 300 years. Later, Diqiu (Wei moved to Diqiu and changed its name to Puyang) really became a blessed land of Wei, where the people of Wei established a country for 388 years. Later, Wei was moved to (now Qinyang) county by Qin in fourteen years and lived there for several decades. During the Spring and Autumn Period and the Warring States Period, when many once famous vassal states were destroyed, Weiguo miraculously escaped numerous disasters and lived until Qin unified the world, but died.