The passage within the Cold Sun connected to underground Nuceria.
Qin Xa walked side by side with Guilliman and Oenomamus, following the golden path into the underground world.
Guilliman and the others had done little to renovate this place, so it remained merely the core of Nuceria's sewer network. However, these sewers had not been built by the High-Riders, nor had Angron ordered their construction. They had been built by the ancient Nuceria entertainment company.
Yet aside from oxygen generators and liquid purification devices, there were not many ancient black-tech Artifacts here.
"You said our universe is on the brink of destruction?" Guilliman stopped in the tunnel.
Tables and chairs stood nearby. One of the chairs was enormous, clearly custom-made for a Primarch. This entire place was likely the Primarch's office.
"Yes." Qin Xa still wore his helmet as he answered beneath Oenomamus's suspicious gaze. "Very little remains of your universe. It was separated out and placed within the Realm of Slaanesh, like a crystal ball or a bonsai."
Qin Xa had instinctively hesitated before saying the latter half, but everything he had seen and heard told him that the people here fully understood the Chaos Four Gods, even the mortals.
Perhaps because Slaanesh had deliberately arranged it, even mortals who knew of the Chaos Gods had not been corrupted. Otherwise, there could not have been mortal Soldiers among those who had suddenly emerged in Desia City to attack Angron.
"A bonsai universe?" Though surprised, Guilliman thought through and understood everything within a second, then asked, "You are not from this universe, are you?"
"I come from a... universe that is not broken." Qin Xa said.
Information such as the multiverse was quite novel to Guilliman. The Primarch was curious as well, but this was hardly the time for questions.