别史 (別史) biéshǐ

biéshǐ noun other histories
Domain: History 历史 , Subdomain: China
Notes: A classification of history other than 正史 'standard history' and 杂史 'miscellaneous history', which includes texts such as 国语 ”Book of Historical Narrative” (Guoyu '別史'; Wikipedia '別史'; Wilkinson 2015, p. 648)