As far as China is concerned, basically all good resources are concentrated in big cities, whether it is talents, education, infrastructure, cultural activities and so on. If you have the ability, you must go to a big city to study! To give a simple example, the two most common schools in Beishangguang, even vocational and technical colleges, require doctors or above, and even require doctors who have returned from studying abroad. Fourth-and fifth-tier cities and even some disciplines are still recruiting masters! This is the gap! Cultural activities in big cities are absolutely rich. If you are in Beijing, you can often go to see some small theater performances, and there are national cultural activities everywhere. You can feel the influence of that culture unconsciously. This is especially true when looking for a job. Don't most people want to go out and see big cities from the beginning? It will be more convenient to find a job if you study in a university in a big city.

There is a huge gap in network infrastructure, software and hardware equipment. Although government departments and Internet and communication enterprises urgently expand their servers and bandwidth and develop various online teaching tools and platforms, these resources are concentrated in cities, and the gap between urban and rural areas is growing. In addition, many families think it is a problem to find a mobile phone to surf the Internet for classes, let alone a computer. And even if there is class equipment, there is not necessarily a network.

The huge gap between students and parents in thought. Students and parents in poor areas pay less attention to education than those in developed areas. For online courses, students' participation is not high, parents do not pay attention to it, and supervision is not in place. Many students even give up online courses directly. Of course, there are many situations that are not allowed by objective conditions, such as left-behind children, for example, parents are busy with their livelihood and have no time to take care of their children's studies.

The distribution of educational resources in different regions is very different. When the Middle School Attached to Renmin University and Chengdu No.7 Middle School have their own online schools that can be exported to the outside world, when students and teachers in cities are used to online classes, teachers in schools in poor areas may never have online teaching experience and lack online teaching skills and equipment. The level of teachers in poor areas is far from that in developed areas. The sudden network teaching puts forward higher requirements for teachers' information literacy. In some places, all teachers are required to give lectures on the spot in response to the slogan "Stop classes and keep studying". In desperation, chaotic scenes and bad influences can be imagined.