Question: Regarding the founder of the Qin dynasty, who was his grandfather?
Sentence (from "Qin Shi Huang"): He became the King Zheng of Qin (秦王政 ) when he was thirteen, then China's first emperor when he was 38 after the Qin had conquered all of the other Warring States and unified all of China in 221 BC.
Relevant evidence: No