Regarding the founder of the Qin dynasty, who was his grandfather?
King Xiaowen of Qin King Xiaowen of Qin (reigned 250 BC) was a Chinese king, who had a very brief reign. He is also known as Lord Anguo (安國君). His grandson was Emperor Qin Shi Huang.
History of the Han dynasty The Han dynasty (206 BCE – 220 CE), founded by the peasant rebel leader Liu Bang (known posthumously as Emperor Gaozu), was the second imperial dynasty of China. It followed the Qin dynasty (221–206 BCE), which had unified the Warring States of China by conquest. Interrupted briefly by the Xin dynasty (9–23 CE) of Wang Mang, the Han dynasty is divided into two periods: the Western Han (206 BCE – 9 CE) and the Eastern Han (25–220 CE). These appellations are derived from the locations of the capital cities Chang'an and Luoyang, respectively. The third and final capital of the dynasty was Xuchang, where the court moved in 196 CE during a period of political turmoil and civil war.