Living beings are spoken of in contrast to dead spirits.
According to Ma Dun's personal summary, dead spirits refer to the strange entities that people like Yan Junze have encountered, while living beings are the living.
In the experiments, Professor Putsinger found that the brainwaves of the "Broken-Winged Angel" were extremely intense and, after being stimulated by the magnetic field, this armless person imagined that he actually grew an arm out of thin air.
This was utterly inconceivable!
To know that this person was not dead but alive, that a living person could stir up a commotion like that of the strangeness, was simply beyond a perfect scientific explanation. Professor Putsinger's experimental results exceeded everyone's understanding of the strangeness.
It was also the first time Junze had heard of the term "living beings."
But now it seemed that whether it was living beings or dead spirits, the strange magnetic field they emanated was the key.