Creators can constantly conceive and revise back and forth on paper and on the computer. Only at the moment when the creator finally sends out, can readers see the highest level the creator wants to present. On the one hand, the creator has sufficient preparation time, and on the other hand, he does not need to show his face in front of the readers (the readers often don’t even know who the creator is). We can say that for creators, graphics and texts have the lowest creation cost among the four. 3. From the reader's point of view Human beings do not like to read books by nature, just like many people say, when I read a book, I get a headache and sleepy. Because for readers, pictures and texts need to be seen with the eyes and thought with the mind, which is the most expensive kind of learning. But Fax List because of the high cost of learning, in most cases, pictures and texts are also the best for learning. Readers themselves need to go through the process of understanding and internalizing knowledge, so they are more impressed. 2. Audio 1. What content is suitable for audio With the development of science and technology, almost all graphic works currently support audio. With the accelerated pace of people's lives, listening to audio has replaced graphic reading in some cases. Because for readers, pictures and texts need to be seen with the eyes and thought with the mind, which is the most expensive kind of learning. But because of the high cost of learning, in most cases, pictures and texts are also the best for learning. Readers themselves need to go through the process of understanding and internalizing knowledge, so they are more impressed. 2. Audio 1. What content is suitable for audio With the development of science and technology, almost all graphic works currently support audio. With the accelerated pace of people's lives, listening to audio has replaced graphic reading in some cases.