Dr. Qiu Xiaodong Changyu, who is internationally renowned for his exquisite and unique criminal investigation and forensic technology, has repeatedly solved strange cases.

The strange case was dubbed by the news media as "contemporary Sherlock Holmes", "master of material evidence identification", "scientific detective" and "crime".

Numbers such as "Star" are household names in America. It is also a kind of competition for countries to hire experts to give lectures. Already won 800.

Multiple honor awards. Is a legend who went from Taiwan Province to the world.

Dr. Li has participated in the investigation of more than 6,000 major criminal cases in American states and other 17 countries around the world, and often goes to all parts of the world.

Lecturing and training criminal investigators around the world. In addition, Dr. Li is the editor of ten professional criminal journals.

He has written and published about 200 academic papers and 20 academic works. Many criminal cases he investigated have become international courts.

Examples of teaching in scientific and police circles. 1In July, 1998, Dr. Li became the police chief of Connecticut.

The highest-ranking Asian in the American police.

This book mainly runs through several mysterious murders that are difficult to convict. These murders lack direct witnesses or allow suspects to recognize them.

Criminal evidence, but Dr. Li solved the case with his superb criminal identification technology, brought the criminal suspect to justice or let the criminal suspect get away with it.

The acquittal of the charges fully illustrates the importance of scientific case handling and shows his outstanding achievements in the detection of criminal cases. What is even more commendable is Li.

In this book, doctors describe many practical techniques and methods for investigating criminal cases, which are by no means beyond the ordinary detective reasoning books and periodicals.

And ...

Li Changyu's resume:

1938 was born in Rugao county, Jiangsu province.

1959 graduated from Taiwan Province Central Police College.

1972 Bachelor of Criminology, City University of new york.

1974 master of biochemistry, new york university.

1975 Ph.D. in biochemistry, new york University.

1975 assistant professor of criminal science, university of new haven

1978 tenured professor at the university of new haven and head of the department of criminal science.

1979 became the director and chief forensic expert of the criminal laboratory of Connecticut Police Department.

1998 became the police chief of Connecticut.

foreword

In the past decades, I have written and published more than 20 books on criminal science. Many of the cases investigated are

It was made into movies and TV programs in America. American publishers keep inviting me to publish books, and one big publishing house even mentioned it.

They want to ask a famous writer to write a book for me, as long as I sign my name on it.

I was paid a million dollars, but I refused. Many lawyers and expert witnesses involved in Simpson's case have become

Millionaire, but I am still the same. My friends sympathize with me, but I stick to the principle that criminal science can't

I bought it with money.

I loved writing since I was a child, and I liked to contribute to newspapers when I was serving in Kinmen. Later, I went to Malaysia and still worked as a teacher.

Chinese newspapers in Hong Kong have been journalists and editors. Engaged in criminal identification for many years, more than 6 thousand major criminal cases.

I have accumulated a lot of experience in the process of investigation. I originally planned to retire as the director of the criminal laboratory of the Connecticut Police Department.

Concentrate on education and research, and compile the cases handled into a book, as one of our own in the criminal science field.

Some experiences for the world's reference.

However, this retirement plan was postponed because I took a new job. 1 July 19981day, Connecticut

Long Luolan officially appointed me as the police chief of Kangzhou. Director of Kangzhou Police Department, Quanzhou 13 police forces.

More than 20 specialized public security anti-drug investigation agencies, national army, fire control, investigation, disaster prevention and other units. annual budget

Hundreds of millions of dollars, responsibility is very important. The governor kept asking me for this position, but I refused. But just this year

(1998) is the year when the governor is re-elected. Roland strongly "asked" me to take this position to emphasize his public safety concept.

My cooperation with the governor has always been very harmonious, so I accepted his appointment. Meanwhile, Roland

The governor also asked me to continue to be the director of the crime lab.

I am the first Asian (including Chinese) in Connecticut and the United States to be the head of state-level public security institutions. After taking office, except

In addition to the activities arranged three years ago, there are many administrative affairs to deal with. Busier than before.

I know that my every move will affect the image of China and Japan, and many younger generations of Asians put me on the list.

Sample, I can't let them down, more can't let the people of China lose face. Although the position of police chief is very busy, I

Or do it with your heart and go all out.

In recent years, the economy, science and technology in Taiwan Province Province have developed rapidly, the social structure has been constantly changing, the democratic consciousness has been gradually enhanced, and the concept of rule of law is profound.

To cultivate people's hearts, criminal science is becoming more and more important. Based on the concept of protecting human rights, the relevant facts of criminal cases need

Strong material evidence can help the police gain the trust of society.

And make the country's legal system recognized and maintained by the people.

During the transition period of democracy and rule of law in Taiwan Province Province, the investigation, collection, sampling, analysis and appraisal of evidence all depend on punishment.

Science of things. As the saying goes, "drinking water from the source", I graduated from the Central Police Academy and worked in the Taiwan Province Police Force.

Have special feelings for Taiwan Province Province. Many friends in Taiwan Province Province advised me to write a book about the cases I handled. although

Now that I have several jobs, I still hope to have the opportunity to repay my kindness from time to time, so I readily agreed to the invitation of Taipei Times Publishing Company.

This paper introduces my experience in handling criminal cases in the United States, hoping to attract more attention and jointly promote the criminal department of Taiwan Province Province.

Learn to keep up with the democratic process in Taiwan Province Province. If this book is about the concepts of criminal science and social democracy and the rule of law in Taiwan Province Province.

If it helps, it will be very gratifying!

The publication of this book has been encouraged and helped by many people. First of all, I want to thank lawyer Deng Hong, who is a promising young lawyer.

The teacher is also my good friend for many years. His life is somewhat similar to my experience, and both of them are struggling to rise in difficulties. the same

I want to thank my good friends, Tan Jinghe and Yan Helu for their encouragement, and I also want to thank the police academy.

Teachers and classmates. My personal achievements are entirely due to the education in the police academy, especially the teachers and classmates.

Fifty-two students in the twenty-fourth period get along at school, share joys and sorrows, and learn and grow together. In addition, many

Good friends who work in Taiwan Province Provincial Police, such as Mei Wangwang, Li Xingtang, Ding Yuanjin, Xie Ruizhi, Yu Yutang and Huang.

Wang Jun,,,, Meng,,, Wang and many other students,

Has occupied an important page in my life.

At present, some friends are in the police circles of the United States and other countries in the world, and I also take this opportunity to thank them for their assistance, especially those who have worked with them.

My friends who work together at the crime scene or in the lab, without them, I can't share these stories with readers.

Some photos in this book were taken by my good friend Dr. Lu Shouan. He is not only superb in medical skills, but also friendly to his friends.

Strong, too. I also want to thank Zhang Hese, Zhuang Shunjia, Cheng Zongxi and Yang Sisheng.

Chen Junyi, Zhong Jiamou, Su Wenche, Zhao Zheming, Lai Junyi, Fang Zhongmin, Xiao Kaiping,

Liu Pingheng and his wife are equal friends.

Of course, I also want to thank my mother Li Wanfo and my brothers and sisters, Li, Li Changgang and Li Changyun.

Li Xiaofeng, Li Changwan, Li Changxia, Li Changping, Li Changxin, Li,. The hands of our compatriots

They are the most important people in my life. And my wife Song is thirty-seven years old.

With your full support, I have no worries; Children Li Xiaomei and Li Xiaoyue, they can understand that I can't often.

Often accompanied by their regrets.

Finally, I want to thank Time Publishing Company and my students Weng Jinghui and Cheng Xiaogui for their help and efforts.

This book can be published.