Twelve Vassals
twelve princes, dukes of the Spring Autumn period in China (477 BCE)
Lu
vassal state during the Zhou Dynasty of ancient China
Chen
Zhou dynasty Chinese state (c. 1045–479 BC)
Zheng
Zhou Dynasty Chinese vassal state (806–375 BC)
Wey
Chinese state (c. 1040 BCE–209 BCE)
Qin
Chinese state from the 9th century BC to 207 BC
Qi
Zhou dynasty Chinese state (1046–221 BCE)
Cai
former vassal Chinese state
Cao
ancient Chinese state
Yan
Ancient state in northern China (11th century BC – 222 BC)