The Basic Mechas were dubbed as Core Units for being extremely bare bones. Aside from a few thin sheets of metal plating, the Core Units were a joke if they would have been sent out for fighting. Hence, what the Pandawans were going through was just an introductory course to piloting to give them a sense of how the robot driving felt like.
The reason why they could get straight into action right now was that they were basically still in tutorial mode. After passing the tutorial, would they be subjected to the waiting time as indicated by the Pandamonium App.
However, that too was an artificial timer meant to waste the cultivators' time and to create hype. It would be rather sad if Niu Lang had put in so much effort making all these robots and no one would like to play.
