That’s what my uncle always told me, he also told me to call him: Daddy takes one hour, for the one who wants to enter, to build his own door. Then he tries hard to knock on the door. The success of the knocking is vital, because the building has only one way in. Is there no other way out? Take the police as an example. In such occasion, the police will put you in prison or may return after one entire life-cycle.