They like to be approached as little children

When you see posters that tell people what to do, you always see an extremely childish style and most of the times they depict all the people as little children. Even if it is about really serious things like Swine Flu-prevention. When I asked a student of the art academy if people are never offended by this childish tone of voice, he said that people, especially the old ones, like it extremely that everything is extremely friendly. But another reason for using the simple style with pictures is that the illiteracy in China is still very high.