Leaping twenty light years in ten years, that was already beyond the speed of light, making use of warp speed travel, along with alien gravity memory navigation and other technology. However, Daphne's 'gravitational wave theory', incredibly, shortens this time by dozens to hundreds of times! It's even possible they initially stumbled upon it by accident, wasting numerous operative opportunities, and took just over a month. If they continue to maximize its use, it might be possible to traverse twenty light years within a month!
What an enticing prospect! If they could acquire this technology, then the Ru Lan Civilization will leave all current civilizations far behind, and might even surpass the rest in science and technology levels with related technology. It could potentially elevate the average Starry Sky Overlord status of the Ru Lan Empire to a true Starry Sky Overlord!