There were several differences between classical Chinese and modern Chinese: 1. Writing method: classical Chinese is written on vertical lines while modern Chinese is written on horizontal lines. 2. Voice system: The voice system of classical Chinese is more complicated than modern Chinese, including tones, syllables, tone, and so on. 3. The grammar structure: The grammar structure of classical Chinese is stricter than that of modern Chinese. The position of the verb and adjectives in the sentence is very fixed, and the usage of the pronoun and the pronoun is more special. 4. The vocabulary system: The vocabulary of classical Chinese is richer than modern Chinese, including polysyllables and idioms. 5. Ways of expression: The expressions in classical Chinese are more euphemistic and use more rhetorical techniques than modern Chinese, while modern Chinese is more straightforward. There are great differences between classical Chinese and modern Chinese in writing style, pronunciation system, grammar structure, vocabulary system and expression.