Shizun had told him why they were down here, as much as he could anyway. He was here to get stronger and find the sword Xin Mo, which would allow him to escape the Abyss.
That's what the System wanted. Shizun hadn't told him that name, he'd just remembered Shizun using it. He's never called it it's name out loud except once.
Shizun had clamped a hand over his mouth and begged him not to say it again. Binghe had complied, though the next time they slept he hadn't been able to find Shizun in their dreams. When he woke up Shizun had already been awake and looked ill. He wouldn't tell Luo Binghe what had happened.
Binghe had questions. But he can't ask them just anywhere. It's a long time before they find a safe spot to rest in for more than a few hours.
They'd killed the creature living in this cave and taken it as their own, Shizun has warded the entrance against anything that might happen by... This was as safe as they could currently be.
"Shizun?" he asked. He had- quite sneakily he thought- corralled Shizun in to back corner of the cave.
"What if I don't get Xin Mo? There's natural rifts in the Abyss right? We could find one of those instead."
"That could take years," Shizun said. ",The other rifts aren't regular and are often unstable so they don't last long."
It's a perfectly sensible answer and if Binghe couldn't hear the buzzing of the thing that controlled Shizun he might have taken it at face value.
"That might be safer than trusting some sword." A sword that Shizun had been subtly warning him against when the buzzing isn't there.
Shizun looked scared for a heartbeat- Binghe hated that expression, he'll rip System apart one day just for all the times it's made Binghe see it-and then it happened again. Shizun goes still and his eyes turn a strange glowing blue.
He thought for a moment the thing inside his Shizun would speak, but it just stared at him.
"System," he said. The thing had been buzzing at an earsplitting volume already - but it pitched up as Binghe spoke. "What if I don't get Xin Mo?"
He's expecting the way the thing reached for Shizun's sword, his hand grabbed Shizun's off the hilt- but then Shizun's other hand drew a small dagger from an inside pocket and turned the blade on himself.
Binghe grabbed the blade of the knife as it sank into Shizun's neck. Shizun doesn't flinch despite the immediate stream of blood down his neck. He also doesn't stop trying to stabbing himself, the knife still cutting into Binghe's palm.
He could likely overpower Shizun this one time, but if System didn't stop...
"I understand." he said, unable to make it sound like he wasn't drinking a whole barrel of vinegar. " This one will find Xin Mo."
System smiled at him with Shizun's face.
The knife clattered to the ground.
"Your hand!" Shizun said. His dark eyes full of worry.
Binghe relaxed and pressed his bleeding hand firmly to the wound on Shizun's neck, more blood mites wouldn't hurt.
"Shizun first." Binghe said firmly even as Shizun fussed over him.
He didn't start healing the cut on his hand until Shizun's injury was healed fully and he left a scar behind when he did, to remind himself to do better. He couldn't let Shizun be hurt because of him again.
Shizun's face was blank again but this was the familiar blank he did when he didn't want to show anyone what he was feeling. Binghe thought he could guess though.
He pulled Shizun in for a hug and was pleased at how tightly Shizun gripped him back.
"I'm going to save you Shizun." he promised.
"You shouldn't bother with-"
Shizun sighed and rested his head on Binghe's shoulder.
"If anyone can it would be you."