Li Dayou's case was quickly solved.
The police didn't disclose the process of him killing his wife and child, as it was too horrifying.
The reason he killed his wife and child was that the child suddenly developed a high fever at night and Zhou Hongxiu woke him up to take the child to the hospital immediately.
Who would have thought that Dayou, being woken up in the middle of the night, would become furious and throw a punch at her head, striking a critical area, knocking her unconscious on the spot.
Seeing Zhou Hongxiu passed out, his anger still hadn't subsided, and he felt very irritated, wanting to vent his violent outburst, so he got out of bed, found an axe in the woodshed, and aimed it at Zhou Hongxiu's neck...
While killing Zhou Hongxiu, his son woke up from unconsciousness. Li Dayou decided to just kill his son too, once and for all.
Subsequently, after the murder, he regained his senses.