The conclusion that science has national boundaries is written as follows: This famous saying was said by French scientist Pasteur, who was an outstanding scientist in the19th century. He invented the vaccination method to prevent infectious diseases, made great contributions to the prevention and treatment of human diseases, made outstanding achievements and enjoyed a world-famous reputation. Germany also gave him an award, but Pasteur refused to accept it. At that time, during the German-French War, Germany occupied a large part of France. His original words were: "Although science has no national boundaries, scientists have their own motherland." Many people only know the last sentence, but don't know the next one. They take it out of context to understand it and defend their actions. The significance of science without borders lies in that scientific achievements can be shared by all mankind without borders. No matter whether a scientific discovery or technological invention originally belongs to eastern science or western science, all human scientific circles can learn to follow suit without borders.