After Sydney newsagent Min Lin was brutally murdered in his bed, his doona was pulled over him, a court has been told.
The body of his sister-in-law Yun Bin "Irene" Lin may also have been moved after she was struck at least eight times with a blunt object.
The gruesome details about the murders of five members of the Lin family were examined on Wednesday with a jury shown a series of photographs from within the North Epping home.
The images depict multiple blood spatter and transfer marks on the walls of three bedrooms where Mr Lin, 45, his wife Yun "Lily" Li Lin, 44, and their sons Henry, 12, and Terry, nine, were all allegedly attacked by Robert Xie with a hammer-like weapon on the morning of July 18, 2009.
Xie is also alleged to have murdered Lily's sister Irene, 39, while she was in her bedroom.
He has pleaded not guilty.
Forensic expert Detective Sergeant Shawn Harkins told the Supreme Court on Wednesday both Min and Lily showed signs of having been moved after the assault, with their doona pulled over Min at some point after the attack.
Irene, who was struck at least eight times, also appears to have been repositioned, with her body discovered lying halfway off her bed.
"It is likely the lower body of Ms Lin had been moved after the assault," Det Sgt Harkins said.
The attack on Irene, he said, had been confined to her bed and she had defensive wounds to the right hand.
The Crown alleges Xie was driven by intense bitterness when he carried out the attack on his brother-in-law's family.
They claim Xie killed the family in the order that represented the greatest threat of detection, first killing Mr Lin and his wife, then Irene and then the two boys.
The trial continues.
