Four Great Fighting Occupations

After ten years of moving and construction, Dragon City reached the peak of its glory while it was on Earth. It had a population of tens of millions. 

Millions of them were specialists and high-quality workers who moved over from the coastal cities. 

There were also more than one hundred full-time universities, hundreds of research centers and industrial parks, and two steel organizations. The researchers and production workers numbered to millions. 

To deal with the cruel competition, Dragon City categorized its industry. They had upstream and downstream industry chains, and a large number of military industries as well as military bases hidden underground, where they would be able to withstand the impact of nuclear weapons.