1. First, it should be clear whether the purpose of the slogan is to encourage reading, promote a book, improve the popularity of a book, or promote a reading activity.

2. Understand whether the target audience is students, teachers, parents, literature lovers or the wider public.

3. Slogans should be concise, easy to understand and remember, and avoid using complicated words or long sentences.

Slogans should highlight the theme they want to convey. For example, if you want to encourage reading, slogans can highlight the fun of reading and the power of knowledge.

5. Use positive and encouraging language instead of negative or critical language.