Lì / shǐ / kè / shàng / lǎo / shī / jiè / shào / le / Wǔ / dài / shǐ / de / biān / zuǎn / bèi / jǐng历史课上,老师介绍了《五代史》的编纂背景。In history class, the teacher introduced the background of the compilation of the History of the Five Dynasties.