Is the five-dimensional efficiency of clearing the north really effective? Which is too much genuine?
Effective, the five-dimensional learning method of Qingbei is genuine. The five-dimensional efficient learning method in Qingbei is really effective. Five-dimensional efficient learning method in northern Qing Dynasty is a learning method developed by famous teachers' groups in northern Qing Dynasty. Five-dimensional Efficient Learning Method in Northern Qing Dynasty is a book published by Peking University Audio-visual Publishing House in 2020. The author is Ni Xinwei, and all subjects include super memory.