Character is not fixed, it along with the time, place and conditions change constantly changing, can't use a word or a phenomenon to easily determine the nature of it.Nonetheless, but by blood relationship, we can roughly estimate the personality change, achieve the "prophecy".

Along with the changes of time,Type A blood,The person's personality and will be how to change?

Type A person is just the opposite and type O people.Fortitude character when I was younger, stronger everywhere, to the society, accommodating the growth of the age, they began to restrain themselves, show the steady modest manner, is easy to become reluctant to err on the side of caution.Generally in age, however, and more stubborn.