In the summer of 1931, Hua Luogeng arrived at Tsinghua University and worked as an assistant in the Department of Mathematics. You see, he is collecting stationery, sending and receiving letters, announcing meetings, taking care of books, typing, and keeping exam papers. He is very busy all day long. But at night, he was never restful and would go to the library every three days.
One day, several classmates gathered around the library administrator and asked: "Hey, how many more books did Hua Luogeng borrow?"
"Five!" The librarian He stretched out his palms and gestured.
"What about the thick book "Theory of Functions" that I borrowed two days ago?"
"It has been returned."
The students stared in confusion. Puzzled eyes: "It took at least ten and a half days to read this big book. But he finished it in just a few nights."
A classmate said: "It's not like he reads books like this. "It's just a glimpse of things."
Another classmate said mysteriously: "I heard that he has a pair of cat eyes and can read in the dark."
"Oh, yes." Really?"
"Then let's go do some reconnaissance tonight."
That night, several classmates quietly came to Hua Luogeng's window under the moonlight. I saw him opening the book, reading for a while, turning off the light and lying down, holding the book on his chest, staring straight at it...
The students watched the moon crossing the trees. The tip climbed over the roof. At this time, Hua Luogeng turned on the light, turned to the last few pages and read it. A satisfied smile flashed across his face, then he put the book aside, picked up another book and read it with interest.
The classmates opened the door and rushed in, "Hey, Hua Luogeng, how did you learn it? Come on, don't be conservative!"
It turns out that Hua Luogeng has a unique He not only reads with his eyes, but also reads with his heart in the dark. He said: "Every time you read a book, you must grasp its central link, think independently, and find your own answers. If the conclusion is the same as in the book, you don't have to memorize it word for word. Because you will remember things after you understand them. , more profound than word-for-word memory. If knowledge is distance, then method is speed. Continuous improvement of methods can speed up the distance."
In this way, Hua Luogeng used his "direct method. ", devouring the knowledge and nutrition in the treasure house of mathematics.