From the paper's screenshots I posted in the first comment, I would boldly guess that my deceased oldest cousin Ya's body and bones were completely eaten or destroyed(eg: high-temperature plasma-based processes including plasma torches, plasma pyrolysis, or plasma gasification) without leaving any obvious traces, while Prof. Chen Zuobing's body (excluding the bones) was eaten or destroyed(eg: Alkaline hydrolysis), leaving some bones behind for further analysis that formed the basis of this paper.
What kind of technology could be used to destroy human body with low amount of traces? Chemical Dissolution (Acids or Bases); Thermal Destruction (High-Heat Methods); Biological/Organic Reduction(Animal scavenging); Emerging or Conceptual "Green" Technologies; Plasma torches, high-energy lasers, or advanced pyrolysis. etc. (Search results obtained from Grok)
Among the methods I listed previously, high-temperature plasma-based processes (plasma torches, plasma pyrolysis, or plasma gasification) would theoretically leave the minimum traces.
If you have any comments or criticism, please leave your opinions here. Thanks.