5 books in this genre
Bao xian yuan li yu shi wu
Xiang jun bo
Bao xian xue yuan li
Zhao, Chunmei (bao xian xue)
Bao xian xue
He wen jiong
Bao xian xue gai lun =
Tsʻao, Hsüeh-chʻin.
Bao xian xue gai lun
Zicao Liu