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"He is..."
These were the only two words from that phone call. They were also the most important clue so far.
The caller must have seen "him," so they wanted to convey an incredibly crucial message, but usually, after seeing the murderer, the first thing one would say should be, "He is..." right.
Why say "He is..." then?
Is "location" more important than "identity"?
So, this kid must have appeared in a place people cannot fathom.
...
"He is..."
It was these two words that gave Chen Xiao a bold idea, leading him to abandon his previous line of thought and go in the opposite direction.
He was no longer fixated on "how the child appeared beside those victims..."
Instead, he reversed his thinking to "how the victims ended up beside this child..."
These two sentences sound similar, their meanings closely aligned, and even the words are exactly the same, just switched around, but they are truly two completely different concepts.