Why do companies recruiting now require junior college and high school?

Because you must have some cultural knowledge. Of course, this society is full of competition. Natural selection, survival of the fittest and flexible survival. People in junior high schools and primary schools can enhance their skills and improve their cultural quality through employment training. With excellent technology, are they afraid that those companies will not recruit you? Don't blame those companies, they should also think of the company. What they can do now is to change themselves.