After entering the Black Cellar, Gao Ming encountered four pairs of hands in total.
The first hand must have belonged to the blind madman himself, who dragged Gao Ming deep into the Black Cellar and into the shadows of his own memories.
The second pair of hands belonged to a couple, likely the birth parents of the blind man, who incessantly beat him, forcing him to leave.
The third pair of hands likely belonged to human traffickers, who probably wanted to turn the still-childlike blind man into a beggar on the street.
The fourth pair of hands gave the blind man a sense of security, and it seemed that it was these hands that raised him.
They cooked for the blind man and taught him various life skills; they probably had no blood relation to the blind man, perhaps it was out of sheer kindness.
In this world void of sound and color, those hands were like the last straw a drowning person could grasp.