On the Primal Star.
Atop a towering mountain stood a silver metal device brimming with technological sophistication, constantly emitting fluctuations that were faint but extremely stable.
Those fluctuations traveled at light speed, taking several full minutes to dissipate.
In essence, they posed little threat to Universe Venerables, but they signified that this territory had an owner.
When Universe Venerables approached and sensed those fluctuations, they naturally left.
Besides emitting fluctuations, it was also a detector.
In theory, apart from the Machine Race, the other races, including humans, had no detectors that could be used on the Primal Stars. Of course, domain-type treasures served as substitutes, and compared to detectors, they could also aid in battle and were more powerful.
However, compared to technological detectors, domain-type treasures also had a drawback: they required powerful individuals to activate them, whereas technological detectors operated on their own.
Dongguan had not bought this device from the Machine Race. He had made it himself.
Although his technology fell short of the Machine Race's, as long as the materials were good enough, making a detector that could function on a Primal Star was no problem at all.
As for Dongguan himself, he was inside the hollowed-out mountain, constantly digging downward.
The Primal Star had a diameter of a hundred billion kilometers, and its matter density even surpassed that of the Primal Star. Anyone below the Immortal level would almost certainly die here, and even Immortals struggled to move. Only Venerables could explore normally.
Very few people dug the way he did.
Of course, Dongguan was not digging for Supreme Treasures, but to sense and observe the Primal Star's interior.
"The interior of a Primal Star really does hold quite a few mysteries." A lake of magma lay before Dongguan.
Yet once extracted, even the magma of