Qin Kai (), was a general of the Kingdom of Yan during the

Warring States period The Warring States period () was an era in History of China#Ancient China, ancient Chinese history characterized by warfare, as well as bureaucratic and military reforms and consolidation. It followed the Spring and Autumn period and concluded ...

of China. He was at one time sent by Yan to Donghu as a

hostage A hostage is a person seized by an abductor in order to compel another party, one which places a high value on the liberty, well-being and safety of the person seized, such as a relative, employer, law enforcement or government to act, or refr ...

. After returning to Yan, around 300 BC, he defeated the Donghu and conquered the

Liaodong Peninsula The Liaodong Peninsula (also Liaotung Peninsula, ) is a peninsula in southern Liaoning province in Northeast China, and makes up the southwestern coastal half of the Liaodong region. It is located between the mouths of the Daliao River ...

from

Gojoseon Gojoseon () also called Joseon (), was the first kingdom on the Korean Peninsula. According to Korean mythology, the kingdom was established by the legendary founder named Dangun. Gojoseon possessed the most advanced culture in the Korean P ...

. Qin Kai was grandfather of

Qin Wuyang Qin Wuyang (秦舞陽) was a young man who followed Jing Ke when the latter went on the mission to assassinate Ying Zheng, the king of Qin. Both Jing and Qin were first disguised as envoys from Yan and were there to present the severed head of "Fa ...

See also