Yes, actually Tie Dan wasn't strong enough to use his Primordial Spirit to directly scan all the way to Phobos. He was just bored before and followed those cargo flights a few times in space, knowing that Phobos is the logistics center and jump station of the Yinghuo Celestial Domain. He also knew that there was an ancient technology device like a jump passage generator on Phobos.
Whenever this generator is activated, a high-intensity gravity tide occurs in the nearby star domain, forming a high-energy corridor channel around Phobos. Then, fully automatic cargo ships would also activate their jump engines, setting off at one percent of the speed of light under the protection of a gravity bubble, transporting a full cargo of resources from Phobos to other star domains, with no one knowing which corner of the Solar System they will eventually be transported to.
