按时
on time; before deadline; on schedule
暗示
to hint; to suggest; suggestion; hint
安史之乱
An-Shi Rebellion (755-763) of 安祿山|安禄山[An1 Lu4 shan1] and 史思明[Shi3 Si1 ming2], a catastrophic setback for Tang dynasty
不谙世故
unworldly; unsophisticated
平安时代
Heian period (794-1185), period of Japanese history
西安事变
Xi'an Incident of 12th December 1936 (kidnap of Chiang Kai-shek 蔣介石|蒋介石[Jiang3 Jie4 shi2])