The Duke of Jin was a prominent figure during the Spring and Autumn period of Chinese history, which lasted from approximately 770 to 476 BCE. He ruled over the state of Jin, one of the major states during this time. The Duke is often associated with the political and military struggles that characterized this era, as various states vied for power and influence. The Duke of Jin is also known for his role in the Warring States period, which followed the Spring and Autumn period. His leadership contributed to the eventual rise of Jin as a significant power in ancient China. The state of Jin later split into three smaller states: Han, Zhao, and Wei, which played crucial roles in the ongoing conflicts of the time.