Under questioning from his defence lawyer Monday, Chun Qi Jiang denied actually killing or dismembering Guang Hua Liu and the court hasn't yet heard how he came to be disposing of her body parts if he didn't commit the murder.
Jiang is telling the court today that his now-deceased mother was angry with his ex because she believed Liu had stolen jewelry from her in the past.
Jiang is charged with first-degree murder in the 41-year-old Liu's death. Her body parts were discovered in Toronto and nearby Mississauga days after she vanished in 2012.
Crown prosecutors have alleged Jiang was unhappy with Liu for apparently reconciling with her new boyfriend.
They allege Jiang killed Liu in his home before methodically carving up her body and disposing of her remains.
Liu's foot was found in Mississauga's Credit River on Aug. 15, triggering a massive investigation. Her head was discovered the next day in the same river, wrapped in two grocery bags.
The trial has also heard from the Crown that Liu's head showed more that 40 "chop-like'' wounds caused by a sharp-edged object.
Jiang was arrested on Aug. 26, 2012, and originally charged with second-degree murder in Liu's death. The charge was upgraded to first-degree murder last summer.