The on-site collection work was done very meticulously.

First of all, the body fluids on the ground are low. After testing, it can be determined that there is only one person's DNA information, which belongs to Zhao Guangming.

Sweat was extracted from the metal ring of the gantry, and dander was extracted from the red rope.

The DNA information on the metal ring and the rope is the same and belongs to a woman.

Some saliva components extracted from Zhao Guangming's chest, their DNA information and gantry

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