Key Points:

On what may have been the last night of her life, An An Liu wrote about how her life was full of disappointments and how it was too hard to find someone who loved her.

The 27-year-old mother sat at her computer in the middle of the night writing on her blog in a tone that suggested she was upset by her fate and unhappy with her life.

Two weeks earlier she had sat at the same computer terminal, confessing that she'd had a relationship with a married man who had a 2-year-old child.

The blog gives an insight into Annie Liu's life, which appears to have ended as early as Tuesday last week.

In her last entry, made the day before, she wrote: "In this world, most of us have a lot of hard times; we struggle for living with exceeding loneliness."

She also wrote: "If a happy start have to end with pains, I rather I never had those happiness. Therefore, I wont need to remember those happy moments and those painful experiences."

The first of three blog entries is dated July 12. The second is dated August 29 and details how she had spent two months with a married man in Wellington, but left him a week before his wife returned.

An An wrote: "He is married and has a two-year-old daughter, which determines our relationship is merely temporary. We lived together like a happy family for almost two months. I found out that I fell in love with this guy."

She came back to Auckland and is believed to have moved back in with her husband Nai Yin Xue, a man with whom she has a history of domestic violence.

The most recent blog was written at around midnight on September 10.

An An's blogs were accompanied by photos of various events including the Boobs on Bike parade, festivals, art shows and the Auckland marathon. The pictures also showed her at the Viaduct, with her daughter and other relatives.

Translator Berry Zheng told the Herald her overall impression of the blogs was that of a sad, lonely woman.

"It's really sad. Her feeling is really sad. She is upset and quite disappointed with everything."

The body of an Asian woman - presumed to be An An Liu - was found yesterday in the boot of 54-year-old Mr Xue's car.

But police are refusing yet to call Mr Xue a suspect, instead making a plea for him to get in touch with them.

"There's a New Zealand police website. You can find our telephone number."

The inquiry head, Detective Senior Sergeant Simon Scott, yesterday said Mr Xue - understood to have fled to the United States - could find a contact number on the New Zealand Police website.

"Please telephone us because we just want to get to the bottom of this," he said.

Mr Scott said police were working with Interpol to find Mr Xue in the United States.

But a Los Angeles police spokesman told TV3 that Interpol had not issued a warant that would allow them to start looking for Mr Xue.

Auckland detectives started the search for An An soon after the couple's 3-year-old daughter Qian was found abandoned at a Melbourne railway station on Saturday.

It is understood Mr Xue left the girl, then caught a flight to the United States.

He and his daughter left New Zealand last Thursday night.

The Honda Rafaga car - emblazoned with the name of Mr Xue's Chinese Times newspaper - had been outside the couple's Keystone Ave, Mt Roskill, home for days.

Though the body has yet to be formally identified, Qian's grandmother, Liu Xiao Ping, has been told of the discovery, and is understood to have applied for papers to leave China to travel to Australia to meet Qian, who is in foster care.

The last official sighting of Mr Xue was at Henderson police station last Thursday morning, when he collected a samurai sword and his passport.

The items were given back to him because charges against him had been dropped after An An refused to give evidence against him.

He then went to KVB Kunlun on Queen St in central Auckland and withdrew US$6445 ($8800).

A Chinese Embassy official in Wellington said last night the the embassy would be liaising with police in trying to find Mr Xue.

"China is a member of Interpol and we have a good communication with New Zealand Police and will offer whatever assistance they need.

"But the New Zealand authorities have not requested any help.

The official said China would assist Qian's grandmother if she needed to travel to Australia to apply for custody of her granddaughter.

Reporting team:
Elizabeth Binning, David Eames, Lincoln Tan, Beck Vass, Stuart Dye, Alanah May Eriksen, Mike Houlahan, Edward Gay and Cleo Fraser, with help from translator Lou Zhou.