Almost by roaring

When Zhou Nan reported all the navigation information to the grand jury after the demonstration, Hu Jun's space shuttle failed on its way back, and all three of his remaining drones crashed in the center of the venue.

Even if the mission failed, they still had to report it to the Chief Judge's team, so when Hu Jun dejectedly went to the judge's team with the information, he heard the conversation.

The Chief Judge: " that's great! Your design, coupled with the drone's programming, is simply amazing!

"Thank you for your compliment," Zhou Nan replied in a neutral tone.

"Can you tell us how you did it?" Oh, how did you make the plane and drone completely zero damage? Perhaps you already know, but we've secretly increased the difficulty of this navigation demonstration."

are you talking about the energy system failure that occurred after the space shuttle's kinetic energy thruster left the main rocket? "