Days after the murder took place, Jiang Ying embarked on a search for his wife and daughter, but to no avail. He began to suspect that Wu Dayong had something to do with it since both his wife and daughter were last seen at the latter's house.
Thus, Wu Dayong decided to go all out and planned an ambush at Jiang Ying's house. He then took the chance to slit Jiang Ying's throat while he was sound asleep.
Afraid that he would arouse the suspicion of the police, he decided to chop off the heads of all three victims.
Afterwards, he abandoned the corpses in the house and cleaned up after the mess, making sure not to leave behind a single trace of evidence.
It happened to be the peak of summer where temperatures were at their warmest, the perfect condition for the decomposition of corpses.
Although the case was finally cracked only after eight years, Wu Dayong would still have to pay the price for the crime he had committed.