The legacy of the Terra Dragon is indeed important, but it is not as important as this suddenly appeared 'Main Ship Engine'.
The Ancestral True Dragons and the second-generation Mentor True Dragons have all vanished, leaving much crucial information unrecorded. Although these Dragon Kings are Dragon Kings, they are merely the successors—who would have thought the main engine of the Skyfall Spaceship wasn't constructed into Dragon Island?
"There's a 'Sombre Crystal Engine' under Dazzling Lake, within my territory..."
Ian also began to recall his mastery of the Heavenfall Legacy, while the Star-Town Dragon King shook his head and said: [The Sombre Crystal Engine is merely a power source for the Creator's spaceship's internal facilities, an emergency backup engine. Simply put, it's an independent energy source that maintains the existence of the 'Cradle System' after detaching from the spaceship's main body.]
