Lost his father at an early age
On November 22, 1938, Li Changyu was born into a wealthy family of salt merchants in Rugao County, Jiangsu Province. There are 13 siblings in the family, and Li Changyu is the youngest child and is very loved by the family.
In 1943, because of the Japanese invasion of China Chinese mainland constant war, Li Changyu's father Li Haomin took his family to Taiwan. But soon after, when Li Haomin was out doing business, the ship he was riding on, the Taiping Ship, was wrecked and killed by hitting the steamboat.
The sudden death of his father plunged the whole family into grief, and the Li family lost its pillars, causing the originally wealthy family to plummet and life to become extremely difficult. Although the days were hard, his mother Wang Shuzhen did not lower the learning requirements for their brothers and sisters. At that time, Wang Shuzhen and her 13 children lived in a deserted suburb in Taoyuan, Taiwan, and the children went to school in the city, and they had to walk dozens of miles back and forth every day. Seeing that the pot was about to be uncovered, she insisted on sending the children to school even if she smashed the pot and sold iron.
At first, young children did not feel that their father did not have much influence, but later found that the days were getting more and more embarrassing. Wang Shuzhen was bitter and painstaking, and she pulled her children up, and said to them with affection and reason: "In the future, we must have the ability and the talent." ”
Joined the police
In 1957, after graduating from high school in Taiwan, Li Changyu was admitted to the Taiwan Central Police College with excellent grades. Three years later, he graduated second in his class and was assigned to the Taipei Police Department. At this point, Li Changyu officially began his journey to become a detective.
Not long after arriving at the police station, Li Changyu participated in the detection of the first case in his life, a headless corpse case.
The victim's body was chopped into pieces by the murderer and packed in six clay jars. At that time, when Li Changyu saw the rotting corpse meat, he vomited directly out in disgust, and for the next month, he did not eat meat, could not even see the appearance of meat, and almost became a vegetarian. But fortunately, in the end, through the efforts of Li Changyu and colleagues, they successfully arrested the murderer.
And this case not only made Li Changyu famous in the local area, but also became the beginning of his criminal investigation career.
After working in the police station for 4 years, Li Changyu has become famous, but he believes that with his own ability and ability, he cannot be an ordinary small police officer all his life, and should play a greater role.
So he had the idea of going to the United States for further education.
Went to the United States to study alone
In 1965, Lee Changyu, full of dreams and ambitions, came to the United States to study.
But when he paid the fees he needed to move to New York, he was left with only $50, which was not enough to support his education. But Li Changyu is a man who does not admit defeat, and he got a job as a laboratory technician at the medical center of New York University.
During the day, Mr. Li worked in the laboratory, and at night, he went to work at a Chinese restaurant. Then go to English tuition classes and preparatory classes for university courses.
In the late '60s, "forensic science" was emerging in the United States, a discipline that applied the principles and methods of various natural sciences such as physics, chemistry and medicine to criminal work and research.
Through strict inspection methods and the study of the crime scene, we look for clues to achieve the purpose of finding out the truth of the case. Since Li Changyu has been engaged in criminal investigation work in Taiwan, he showed a strong interest when he first heard about this discipline. In the end, Li Changyu decided to pursue this major.
He also successfully applied for the newly established Forensic Science Scholarship at the John Jay College of Criminal Justice. At that time, Li Changyu was only interested in "criminal forensics", and he never imagined that many years later, he would become a popular figure in the world's criminal investigation community. With his unremitting efforts, Li Changyu's academic performance has always been among the best, and he also completed all the courses in two years and obtained a bachelor's degree.
Subsequently, Li Changyu received his master's degree and doctorate in biochemistry and molecular chemistry from New York University.
After graduating with a doctorate, Li Changyu came to a fork in his life path, he did not continue to engage in biochemical research, but turned around and chose the criminal identification industry, which was still very unpopular at that time.
He moved to New York University as an assistant professor in the Department of Criminal Justice at the University of Haven, where he soon created the Department of Forensic Science.
In 1979, Li Changyu became the director of the Connecticut Criminal Identification Laboratory.
It was in the summer of that year that Ling, Connecticut, USA
Joanna, a 12-year-old junior high school girl in Don, was sent by her parents to a nearby swimming summer camp.
Summer camp girl murdered
Every day after the course, Joanna would leave on her bike and be home around 2:30 p.m.
However, at 3 p.m. one day, Joanna's mother did not see her daughter return at home.
So, she hurriedly called the school and her daughter's classmates to inquire, but the result was that Joanna had left on her bicycle.
Suddenly, Joanna's mother sensed that something was wrong
So she immediately called the police.
After receiving the alarm, the police mobilized two or three hundred volunteers to search the city, but did not find any news about Joanna.
Until the next day, deep in the bushes not far from the summer camp
A firefighter found a body that had burned beyond recognition.
After the identification of Joanna's parents, the body is the long-missing Joanna.
Subsequently, the Connecticut Police Department found Li Changyu to help solve the case.
After Li Changyu got the news, he rushed to the scene of the crime without stopping, but when he came to the scene, he felt a headache.
There were many onlookers at the scene, covered with various footprints, and the first police officers who arrived, and even some high-ranking officials who came to inspect and solve the case, had vandalized the scene.
Even the head of the corpse and the clothes on its body were moved
, and left their fingerprints.
Even so, Lee found red paint on the shoelaces that tied Joanna's hands and feet and a mutilated fingerprint on a murder weapon knife.
With this fingerprint, Li Changyu finally found the 16-year-old murderer Rona.
The detection of Catherine's case is not only the first case in the history of Connecticut to be solved on the basis of physical evidence, but also greatly encourages and motivates Li Changyu and his state forensic science laboratory, proving the role of forensic discipline in criminal investigation.
Since then, Li Changyu has relied on his ability to identify and solve many mysterious and complex homicide cases.
Vanished flight attendants
In 1986, a sensational "sawmill wife murder case" occurred in Connecticut, USA.
On November 16, Kelly, a Pan Am flight attendant, suddenly disappeared after completing her flight.
A few days later, Kelly's colleagues called the police, telling them that it was likely Kelly's husband, Richard, who had killed her.
After the police learned about it, they immediately conducted a polygraph test on Richard.
But Richard had worked for the CIA for many years, so he easily passed the police polygraph experiment.
Immediately afterwards, the police searched the homes of Kelly and Richard, but did not find the body and murder weapon.
Even when they sent helicopters and radars, they still didn't find any clues.
In this regard, the police suspect that it is likely that Richard destroyed the evidence.
But Li Changyu did not think so, and he took his experimental team to carefully search Richard's home.
A small reddish-brown blood spot was found under the bed, while Lee Chang-woo also discovered that Richard had purchased a large sawmill and a meat grinder before Kylie disappeared.
Through this, Li Changyu asked the police to salvage a nearby lake, and also said that there would definitely be Kelly's bones in the lake.
Sure enough, police found 56 broken human bones and some hair, as well as pieces of flesh and teeth, in a nearby lake.
Immediately afterwards, Li Changyu detected Kelly's DNA through these body fragments found by the police.
At the same time, the police found a chainsaw in the ice lake whose number had been worn.
Lee uses chemical methods to restore the worn number.
Subsequently, the police identified the owner of the chainsaw, it was Richard, and eventually they captured the real murderer.
After solving this case, Li Changyu became more and more famous in the American criminal investigation community, and he quickly became one of the most well-known police elites in the United States.
In the 30s of the 20th century, with the gradual attention and promotion of forensic science, many law enforcement agencies in the United States have been paid attention to and promoted, and Li Changyu also served as the police commissioner of the Connecticut State in 1998, becoming the first Chinese chief in the United States to hold the highest position in the state police department.