The Aura Mall offered blueprints for every kind of advanced technology imaginable, and Nan Yu spent a very, very long time browsing through them.
He desperately wanted to immediately hand over the blueprints for the most advanced fighter jets and warships to the country. However, given that he was just someone who had recently walked out of a remote village, it would be hard for anyone not to be suspicious if he suddenly produced such cutting-edge designs.
After turning it over in his mind and comparing various options, Nan Yu finally decided to redeem blueprints for improving existing trains, purely to play it safe.
Chapter 340