Xuézhě / chángcháng / tōngguò / Liǔ / Yǒng / de / zuòpǐn / yánjiū / Běi / Sòng / cí / de / fāzhǎn

学者常常通过柳永的作品研究北宋词的发展。

Scholars often study the development of Northern Song ci poetry through Liu Yong's works.