lǎo / shī / ràng / wǒ / men / cóng / guǎng / yùn / lǐ / chá / zhǎo / zhè / ge / zì / de / fǎn / qiè

老师让我们从《广韵》里查找这个字的反切。

The teacher asked us to look up the fǎnqiè spelling of this character in the Guangyun.