Water knows the answer, does the fetus know the answer? Parents' thoughts are the first education their children receive. Parents are originals and children are copies. Parents study hard and children learn from each other every day. Therefore, parents have been educated by sages since childhood, and they have developed the "childlike innocence", and their children are absolutely "authentic" when they are born.
What if it's too late? Act now, it's not too late to mend. It is a little late for parents to study the education of saints when they have children, because it takes a process of digestion to transform the thoughts of saints into those of parents. The classics heard by the fetus and the confused thoughts of parents will have a bad influence on the fetus' learning of classics.
Imagine: if the teacher standing on the podium has a lot of doubts about the textbook, what will the student union look like? The parents don't study sage education, but only listen to sage classics for the fetus, okay? No way! Because the classics of fetal learning are almost contrary to the ideas accepted from parents, children are born with a split mind and body.