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　　Cui Daozhi, the original director of the Criminal Technology Department of the Public Security Department of Heilongjiang Province —

　　"Do not shake the faith，Energy can always be the same "(Struggle Centennial Road Lay Sailing New Journey · Seven One Medal"

In the room in the elderly apartment in Harbin，Cui Daozhi is conducting trace inspection experiments (taken on June 8th)。Xinhua News Agency reporter Wang Song Photo

Seeing marks and knowing guns，Perspective people -in the criminal investigation business of the New China Public Security，Cui Daozhi, who is practicing a pair of "fire eyes" is a legend。

Cui Daozhi，The original office of the Criminal Technology Office of the Public Security Department of Heilongjiang Provincial Public Security Department，my country's first generation of criminal technology police、Chinese chief gun marks appraisal expert。In his more than 60 years of criminal investigation career，Inspection and appraisal of more than 7,000 traces of traces，Participate in the handling of more than 1,200 major cases of incidental incidents for testing and appraisal，Nothing to make mistakes。

"I love my job，All the work given me by the superior，I am all loved，Because this was given to me by the people ... "The young Cui Daozhi wrote like this in the application for joining the party，In the following years, he did this。The year Sky bet online sports Sky bet online sports betting APP download betting APP download of 耄耋 忘 忘，Participate in a series of cases that have been cracked for a long time，Sort the bullet inspection textbook courseware，Provide reference for reference for colleagues across the country，The title of "Most Beautiful Struggler" and "Advanced Personal Personal Personal Personal Personal Personal" in the country，Awarded the "National Public Security System First -level Hero Model" Medal。

Seeing marks and knowing guns

— More than 7,000 identification traces，Nothing to make mistakes

On each crime scene，Cases of guns will show different "expressions"，It seems intricate like fingerprints，In fact, the texture is clear，It's just that ordinary people are difficult to detect。and this fine place，But I can't escape Cui Daozi's eyes。

robbery guns、robbery and killing with a gun ... In the 1990s，Bai Baoshan flows in Beijing、Xinjiang and other places for continuous crimes。"The initial identification results indicate，Beijing series of cases is to use the "Bayi" automatic rifle in the crime，Xinjiang series of cases is to work with the "Five -six" semi -automatic rifle，Two kinds of guns，Can't merge the case。"Case investigation work was once in a deadlock，Until Cui Daozhi has taken over the problem。Different from the traces of various fiber -like hair in the shooting shell and warhead，Is his unique skills。

After three days and two nights identification，Cui Daozhi concluded: "A subtle place in the shell，A small horizontal line shot by the ‘Bayi” automatic rifle，You can sky bet online sports betting determine Beijing、The Sky bet football gun involved in Xinjiang is the same ‘eight -one” automatic rifle。”

According to Cui Daozi's conclusion，The task force quickly transforms the investigation direction。major criminal suspect Bai Baoshan enters the police vision，and was finally captured。

Behind the critical case，It is the hard work of the years。"For a while, my father judged the Ming shotgun in order to pass the shell，Collect various models of shotguns，The bullet shell guarded by the box is pondered all night。"Cui Daibin, the eldest son of Cui Daozhi, recalls。

1981，A murder case in Mudanjiang, Heilongjiang，Fatal injury is a knife injury。Forensic doctors found the only clue in the victim's abdomen -a residual nail travel，It is inferred that the suspect is too hard to fight when the suspect fights with the victim，Learning nails was torn。But the DNA technology was not available at that time，Nail Appraisal Technology is still a blank in the field of criminal technology in my country，Can nails become evidence of identification?

Cui Daozhi quickly established a topic，Expand research。"I have collected nails cut by 200 students in 4 classes of the Provincial Police School every 20 days，Observe their high and low line arrangement from the beginning to a half year。"Cui Daozhi discovered，Each nail has 120 to 130 vertical lines，The thickness of each line and the gap between each other are different，The arrangement of the vertical line varies from person to person，The identification sky bet online casino value of the same fingerprint。

sky bet online casino Cui Daozhi let the case handler cut the 10 nails of all the suspects，"Compare with the fate of the nails left on the scene，Confirm that the sample height of the sample with a suspect's right little finger is high，Murderer final arrest。”

Any criminal case must have on -site，There must be traces on the scene。Since the police since the police in 1955，Cui Daozhi has accumulated more than 7,000 pieces of inspection and appraisal traces，Participate in the handling of more than 1,200 major cases of incidental incidents for testing and appraisal，Nothing to make mistakes。

Unremitting correction

—— Complete a number of scientific research topics，Fill in domestic technology gaps

One case involved in a gun，Cui Daozhi is not in the laboratory，is on the shooting field。

"At that time, there was no bullet automatic recognition system，All rely on manual operation。"Cui Daozhi said，"For example, a pistol rifle is severely worn，The traces left on the shell warhead will also be different，To figure out the relationship between the two，The most effective way is to repeat test。"Cui Daozhi once hit 3,000 bullets with a pistol，Then one by one photo，One by one ratio，Record the rules of the trace changes。

1997，At the International Criminal Investigation Equipment Exhibition held by the Ministry of Public Security，Cui Daozhi saw the automatic identification system of all kinds of bullet traces abroad，"I think of our country without，I was in a hurry in my heart! "

Scientific research? But I have retired，It is difficult to apply Sky bet online sports betting APP download Sky bet football for funds。Cui Daozhi save money and use，Research with retirement salary。7 Higher School、3 Precision Instrument Research Institute、3 aluminum factories and aluminum foil paddles ... 5 years，To extract the rifle trace extraction technology，Cui Daozhi kept running; in order to design the ideal bomb marks flat device，He designed 4 model diagrams a succession，Cooperate with 4 mechanical processing plants。

Kung Fu is not responsible for people。Final，Cui Daozhi successfully invented a technology that extract the warhead rifles with a special aluminum foil film，promoted and applied in 39 units in many provinces; he designed and manufactured a bomb marks flat device，Copy rifle marks are clearer and stable than ever。

"Cui Daozhi uses aluminum foil films and ammunition scalpel flat device for bullet marks to test and appraisal technology，Get the national patent，He can have obtained a lot of economic income with patent rights，But he said，The word "patent" limited the technology of other peer applications，So I took the initiative to give up the patent right。"Teng Xiaolong, deputy head of the Criminal Technology Corps of the Heilongjiang Provincial Public Security Department, said。

Since 1981，Cui Daozhi wrote a series of papers in the traces of bullets，Complete handprint、Footprint、7 scientific research topics such as bullet traces，It also created the precedent of "the same identification of the nails" and "the same identification of the tooth marks"，On -site traces of the research sky bet online sports Sky bet football betting and development of the evidence image processing、Automatic recognition system of bullet marks，Filled a number of domestic technology gaps。

Do not forget the original heart

- "As long as the organization needs，I have to call back、Call and get "

In the yard downstairs in the apartment，In the yard downstairs in the apartment，The body is very straight，This is like an 87 -year -old man?

Ask him why he is old and not old，Cui Daozhi Fun Dao，"The secret recipe has，That is work。Every case is broken，I will be young once，Every time you attack a problem，I just feel young。”

Retirement 26 years，Cui Daozhi devoted himself to research on scientific research、Miseration teaching，It made important contributions to promoting the innovation and development of criminal technology of public security。He often said: "At this age，I need to take a breath，Do not shake the faith，motivation can always be the same。”

"I joined the party on December 6, 1953。"Cui Daozhi still remembers his own date of joining the party，"It was the party cultivated me，All opportunities in this life are given by the party and the country，Can you not repay the party? "

Cui Daozhi was born in a family of farmers in Meikou, Meihe, Jilin Province in 1934，I became an orphan at the age of 6。1946，12 -year -old Cui Daozhi became a Children's Group Captain。From then on，Joining the army to join the party is his ambition。

"I want to go on the front line when fighting against the United States and aid North Korea，But the physical examination has not been。I cry with Sky bet online sports Sky bet online sports betting APP download betting APP download noise，Must go! "Cui Daozhi sky bet online sports betting carefully took out the bright" Anti -US Aid Commemorative Medal "，"They can't stab me，Turn me into the alternate list，Never thought that someone happened to miss the registration time，I just joined the Volunteer Army。"" Speaking of this，The corner of the old man's mouth rises，It seems to be revisiting that joy。

1955，Cui Daozhi transferred from the army to the Heilongjiang Provincial Public Security Department，It became my country's first generation of criminal technology police，He has been at the Central Police School (now China Interpol College)、Harbin Workers Amateur University、Harbin Medical University for further studies。

Busy work，Let Cui Daozhi and his family gather and leave more。June 1995，On the day when Cui Daozhi retirees，My wife Jin Yiyi and the children were originally looking forward to the family "reunion"，However, retirement has not become a "rest symbol" in Cui Daozi's career。

"As long as the organization needs，I have to call back、Follow the call。"Cui Daozhi, who has retired for 26 years，Still sticking to the front line of criminal investigation。In recent years，In addition to going out to handle the case，Cui Daozhi buried his head at home to organize slides，He said, "I have to quickly sort out the accumulation of these decades。Patent、Don’t be copyright，It can be helpful for future generations。”

"People's Daily" (05th version of July 29, 2021)

Editor in charge: Wang Yixiao