With the popularization of mobile payment and the gradual development of the concept of knowledge content consumption, payment for knowledge has gradually become a generally accepted way of learning  Since 2015, various platforms of payment for knowledge have been launched, and the number of users has grown rapidly
Related reports show that the number of the users paying for knowledge content in China reached 188 million in 2017, and payment for knowledge is becoming a weapon for people to break through the massive amount of information
Payment for knowledge can satisfy the wide range of interests of netizens at any time.