tā / zài / tú shū guǎn / lǐ / zhǎo dào le / yī běn / gǔ dài / dì wáng pǔ / zǐ xì / yán jiū / lì dài / huáng dì / de / chuán chéng

他在图书馆里找到了一本古代帝王谱，仔细研究历代皇帝的传承。

He found an ancient dynastic genealogy in the library and carefully studied the succession of emperors.