Jay was successfully injected with the Ultimate Vaccine. In a twist of fate, the typical side-effects were nullified because he was in a coma. The day after that, Zhang Heng and Ebon brought his body out of the Hope. Their destination was a wooden cabin set up next to the capital building site. It was sandwiched between a grass plain and a riverside fishing hole. The cabin was big enough to fit Zhang Heng, Ebon, and Jay.
Yao Yuan had his own idea behind this arrangement.
First, the obvious gain aside, Jay was his comrade, and they had been in plenty of life-or-death situations before. Yao Yuan had already treated him as part of the Black Star Unit. Furthermore, Jay ended up this way due to a selfless action, so Yao Yuan really wanted him to wake up.
Practically speaking, Jay was one of the most unique Homo Evolutis alongside the All-Rounder. Yao Yuan needed more information on the Deceiver’s power, and that could only be done with Jay’s conscious cooperation.