What do the three slogans of "good reading, good reading, and good reading" mean?

Reading is good: It emphasizes the verb "reading", indicating that reading is good for you. Good reading: "Good" means hobby, which means to love reading. Read good books: "Good" here is an adjective, which means that you should choose the best books when reading, and it is best not to read vulgar books. Reading is good: I encourage everyone to read, reading is beneficial. Read more: Give suggestions on the number of books to read, the more you read, the more you will gain. Read good books: Provide guidance on the choice of reading, choose good books, and the benefits are endless.