MISSING WOMAN QI YU POLICE PRESSER
The parents of Chinese woman Qi Yu, who are struggling to come to terms with their daughter's disappearance in Sydney, have been told the chance of the 28-year-old being found alive is "non-existent".
Ms Yu's father, Zhihe Yu, and mother, Qing He, issued an emotional plea for information on Tuesday handing out flyers at a news conference which read: "Looking for Missing Girl Qi Yu."
"Both of us cannot sleep every night ... my wife's tears run dry," Mr Yu said as his wife sobbed next to him clutching tissues and hiding her eyes with sunglasses.
"If you have any information regarding my daughter and her whereabouts please contact police."
They have distributed the flyers at train stations and visited Ku-ring-gai Chase National Park, north of Sydney, where police are scouring bushland and waterways for their daughter's body.
Ms Yu was last seen by friends at a Campsie share house in the city's southwest on June 8.
Her housemate, 19-year-old Shuo Dong, was charged with her murder four days later.
Detective Superintendent Kerrie-Anne Lewis says Qi Yu's parents - who flew out from China in the days after her disappearance - are "obviously distraught".
"They still have some element of hope but they are also very aware that it's been 18 days and the likelihood of finding their daughter alive is obviously non-existent," Det Supt Lewis told reporters.
Phone records suggest Ms Yu's white Toyota Corolla travelled north to the area around Mount Kuring-gai, Berowra and Cowan and then back to Campsie between 8.30pm and midnight.
The 2016 model hatchback was later found dumped at Burwood in Sydney's west.
Detectives believe Ms Yu was taken by car to the Berowra area on the night she went missing.
Det Supt Lewis said the car's green P-plates may "trigger someone's memory" of seeing the vehicle in the area and parked closely to any bush tracks.
"They might have dash-cam footage of that vehicle, in a car park or perhaps near a boat ramp," she said.
Cadaver dogs joined the search on Tuesday and any available CCTV from the wider region is being gathered.
"I can't really put a figure on how large it is in terms of square kilometres but it (the search area) is certainly extensive and it's quite dense," Det Supt Lewis said.
Dong remains in custody with his matter listed for mention in Burwood Local Court on July 9.