Collect the relationship between material handling points and surfaces. There are many ways to collect information, such as online search, newspapers and periodicals, historical archives, etc. Information is vast, but what we need is limited.
Seeking the limit in infinity requires the ability to distinguish and deal with the relationship between points and surfaces, which depends on the familiarity with the works. The same is true for handwritten newspapers, as long as you search for big data around integrity.
Pay attention to collecting materials
The purpose of collecting materials is application, and the application materials should be fully expressed rather than simply extracted. Simple abstraction and comprehensive expression are two different stages and levels of using materials. Accordingly, the methods of collecting and processing materials can be divided into possession, digestion and absorption.
Some people spend a lot of time on making cards, cutting newspapers and collecting materials, but they don't digest and absorb them in time. The materials used are relatively stiff, and the traces of simple copying are often obvious. Because the phenomenon of simply extracting information still exists to a certain extent in reality, some people think that the writing of institutional manuscripts is just plagiarism, which is also the so-called "a big copy of the world's articles".