My children wrote articles about studying. They have learned by self-education and self-learning. They have not taught by teachers.
They say that the basic principle is writing text of books by their hands. It’s mimicry.
Mimicry of dou-learning is oneness with everything or everybody. Mimicry is the most creative. Mimicry develops the ability of understanding.
Mimicry writing is the best. I cannot tell too much about mimicry writing.
That is the secret of dou-learning.
That is miracle but not magic. Because that requires long time and long training for years. That is not efficient way.
It is the truth that we can get a treasure with the same cost: time and effort rather than money. We cannot get true treasure with money.