Fire-Dragon Bounty Territory neighbored Gaoping Prefecture in Yanzhou Province. It only took Commander Cheng's airboat 3 hours to arrive at Fire-Dragon Bounty Territory from Ninghe Prefecture in Yanzhou Province.
Even though nobody reminded him, Commander Cheng had already known when the airboat entered the air territory of Fire-Dragon Bounty Territory.
A team of 9 silver airplanes flew over from below the airboat of Commander Cheng in a tidy herringbone formation over 2,000 m high with the booms of engines.
Compared to the airboat, airplanes were much smaller and slower. However, at the first sight of those airplanes, Commander Cheng was indeed attracted by them.
Soon after Commander Cheng entered the air territory of Fire-Dragon Bounty Territory, he had relieved his slight frown.
"Are these airplanes being driven by Fiery Oil?" Commander Cheng asked Gao Tianqi while gazing at those airplanes flying across the clouds below with shiny eyes.