Title: Shi ji jian zheng
Subjects: History
Places: China
People: Qian Sima (ca. 145-ca. 86 B.C.), Qian Sima (ca. 145-ca. 86 B.C)
Time periods: Han dynasty, 202 B.C.-220 A.D, To 221 B.C., Qin dynasty, 221-207 B.C.