2 1 year-old China students brutally killed their roommates. What is his motive for killing?

The man who killed Yu Qi was her male roommate Dong Shuo. Dong Shuozhi killed Yu Qi only because Yu Qi knew that his student visa had expired and was afraid that Yu Qi would report himself. He would rather kill people than go back to China.

With the development of China's economy and the improvement of people's living standards, more and more students go abroad to study. Australia is one of the choices for studying abroad. Yu Qi is an international student in Australia. In 2009, Yu Qi came to Australia and completed her undergraduate study in electronic engineering and her master's study in telecommunications at the University of New South Wales. Yu Qi has been in Australia for several years, and she never thought that one day she would die young in a foreign country.

Yu Qi was killed by Dong Shuo, Yu Qi's male roommate. Other roommates said that Yu Qi had an argument with Dong Shuo about rent and short-term lease the night before he was killed. Later, the police found Yu Qi's body through Yu Qi's cell phone records. With the further investigation by the police, it was found that Dong Shuo was the most suspected, and Dong Shuo quickly admitted his criminal facts.

Why did Dong say he wanted to kill Yu Qi? The reason is that his back is numb. Just because Yu Qi found out that his student visa had expired, Dong Shuo was afraid that Yu Qi would report himself, so he moved out to stall her first, and Yu Qi paid him back the rent for two weeks, but what about Dong Shuo? During this period, what is his web search content about? How to sentence murder in Australia? How long is the sentence for international murder in Australia? Wait, he made a careful plan.

Dong Shuo believes that there is no death penalty in Australia. If you are put in prison, you can stay in Australia for life. He would rather kill people and go to jail than go back to China. What's his mentality? But is prison life as good as he thinks? After he went to prison, he claimed that he was mentally ill. Dong Shuo's appraisal results can't tell whether he is mentally ill. Even if Dong Shuo is really mentally ill, it can't be used as an excuse for him to kill. He ruined a happy family.