"I can use essence, if you prefer." They seem to slip it in, as irrelevant as it is to Jingyi's current question, but continues on to actually answer his heated question.

The finger in the band of silver fades to a darkened grey.

"Your essence becomes connected only to the craft. You are trapped in the void. And there is nothing to protect a tethered body from becoming destroyed - it can perish, at any point. If your body were to lose a limb -" they point to one of Jingyi's open palms, with the darkened grey digit, the colouration spreading over their hand in a light that he can move his hand out of.

"--either as you are now, as your essence, or, on your physical being's anchor, you would lose that limb. ... unless you can regrow limbs."

Then that's that. The coloured light fades away, except where they keep to Ten-Nank's fingers.

"Otherwise, you will lose it. It would atrophy on the physical being. Become unusable. Even if it appeared 'fine', as it should - your essence wouldn't comprehend it. Acknowledge it."