unable to profit from what one has read
It is a Chinese idiom, Pinyin is t ú D ú f ù sh ū, which means that people only know how to read without using knowledge. It comes from the biography of Lian Po and Lin Xiangru in historical records.
Idiom usage
I'd like to ask the king not to send me if I don't know how to change my mind. The 98th chapter of the chronicles of the Eastern Zhou Dynasty by Feng Menglong in Ming Dynasty
The origin of Idioms
In the biography of Lin Xiangru in historical records: "kuituo can read his father's book, but he doesn't know how to change."
Chinese PinYin : tú dú fù shū
unable to profit from what one has read
hackneyed and stereotyped expressions. chén cí làn diào
a hoary head does research in the classics -- an aged person still learns. hào shǒu qióng jīng