See which ancient dictionary works well.

In high school, it is best to use the Dictionary of Ancient Chinese Common Words of the Commercial Press. Because this book is authoritative, concise and practical, it is enough for high school level.

Of course, if you want to go further, you can choose Wang Li's Ancient Chinese Dictionary by Zhonghua Book Company, Ancient Chinese Dictionary by Commercial Press and Ancient Chinese Dictionary by Jilin Literature and History Publishing House.

If you want to engage in professional research in the future, you can choose reference books such as Ci Yuan, Chinese Dictionary, Ci Hai, Chinese Dictionary and Shuowen Jiezi.