Ultimately, the scientists could only provide an ambiguous conclusion. This conclusion coincidentally aligned with the speculations of Earth humans in the 21st century within the relevant field: it categorized human thought as a collection of quantum entanglement patterns, also as a form of aggregation in the cosmic information flow, which lies beyond the boundaries reachable by human technology.
This situation in Marquis Zhenjiang's brain is precisely what it signifies.
Her cognitive decay rate during cryogenic sleep was faster than that of ordinary people, so after half a million years, even though her body remained youthful and her cell activity was consistent with her physiological age, the quantum entanglement pattern spiral in her brain was as discrete as that of an elderly person.
If she were in a completely conscious state, the stream of cognitive life would decay even faster. Finally, after years of research by her array of scientists, a reliable solution was devised.
