Now we have had many experiences with corona pandemic. Among them, there have been major changes in the education system. Online video training, video conferencing, telecommuting, online lectures and e-learning, etc., were unthinkable just a few years ago.

1. Now, the 21st century education system has no choice but to change. In particular, it is a change in the consciousness of teachers, freelancers, and parents related to children's education. This is because teachers and parents are the MZ generation (those born between 1980 and 2000, digital natives), and the educational target is also facing environmental changes in the media age.

2. In particular, the MZ generation, who are familiar with the digital environment, are both consumers and suppliers who exert a strong influence in the distribution market based on SNS.

3. Blue kkaebi is a hybrid education system that allows anyone to supply children's educational contents without time constraints anytime, anywhere, regardless of domestic or international regions, and to utilize necessary educational contents.

4. Bluekkaebi is a children's education system for efficient education where consumers and suppliers voluntarily form a '21st century learning framework'.