When Zhang Yean took the tools, she specifically reminded him, "You have to be very gentle. We need to preserve the ash layer in its original state."
"Start from the edges first, peel it away layer by layer and observe."
"Senior, aren't these just ordinary combustion residues?"
The assistant carefully scooped up the first shovel of ash while asking, unable to hold back his curiosity, "Is there really anything special we can see in this?"
"The ash at a fire scene is like a book that's been burned!"
Lighting the ash with a high-intensity flashlight, Zhang Yean said, "Even though it all looks the same on the surface, if you look closely, you can still 'read' a lot of information from it."
The first shovel of ash was spread evenly over the prepared white paper.
