Lu Xun's literary attainments were very high, which could be expressed in the following idioms: 1. A spring of thoughts and ideas: It described the state in which the thoughts and feelings of the article were rich and ejected. 2. Talented: A person who has outstanding talent and is overflowing with talent. 3. Profound attainments: It refers to a person who is extremely proficient in a certain field or aspect. 4. Unique: It described having unique creativity and design thinking that could bring forth new ideas. The above four idioms can express Lu Xun's high literary attainments.