We only have one earth, but this unique earth is not simple. There are many things need people to understand, to solve. Let me take illness as an example. Everyone will get ill, such as catch a cold, have a fever, cough, sugar diabetes and so on. These diseases are so common. As people have paid attention on them, anyone who gets any disease of them would not have to worry about too much. They will be cured at last. However, there are some rare diseases, which not many people realize. Some people fracture head touched on the bone, some people all body is white, some people is difficult to control bleeding once he falls to bleed, some people’s all body muscle is weakness and atrophy. The chance to have those kinds of diseases is one in a million. But it is hard for them to be diagnosed and even they were diagnosed, the cure is limited and expensive. Those poor people need the notice of the society. They need to be treated, to be cared and to be understood. Help them, please.