With the emergence of the Internet, people have more convenient and efficient channels to seek knowledge  However, in order to cling to the market at the initial stage of development, Internet enterprises basically provided relevant information and knowledge to netizens free of charge, which formed the habit of free consumption of the Internet by Chinese netizens, and could not adapt to or even contradict the need to pay for online reading  In this context, some knowledge paid APP is not smooth in market development
However, it is this kind of APP with the help of the Internet that makes knowledge show its market value, and because of the popularization of new technology, compared with traditional teaching and writing, on the one hand, it wins more economic benefits for knowledge providers, on the other hand, it saves a lot of money for knowledge consumers
It brings a win-win situation for both merchants and consumers