Title: Qing dai Yizheng Liu shi "Zuo zhuan" jia xue yan jiu
Subjects: Learning and scholarship, History, Intellectual life
Places: China
People: Wenqi Liu (1789-1854), Yusong Liu (1818-1867), Liu family, Shipei Liu (1884-1919), Ming Zuoqiu
Time periods: 1644-1912