What does the fortune teller mean by asking the children to take me to school?

What does the fortune teller mean by asking my children to take me over? -After death, please ask monks and Taoists to do one thing, which is called crossing over. Crossing means: transcending the secular world and transiting to heaven and western paradise. It is impossible to cross over for yourself after death. It must be their children who go through the ceremony of crossing over. This is what the gentleman said.