[Photo Group] Mother's Day Remarks: From Ancient Times to Today, the Beginning of Human Existence

In fact, the cognition of human beings itself is slow and limited. Just 250 years ago, we did not know anything about the process of fetus conception in the uterus. Of course, now we can see clearly the whole process of fetus development. However, there are still a lot of mysteries in human body that have not been solved. A small H1N1 virus makes all human beings nervous. There is still a long way to go for exploring the human body and the task is still arduous.