Zhè / běn / Hàn / yǔ / Dà / Cí / diǎn / duì / yán / jiū / gǔ / dài / Hàn / yǔ / hěn / yǒu / bāng / zhù

这本汉语大词典对研究古代汉语很有帮助。

This Hanyu Da Cidian is very helpful for studying Classical Chinese.