According to Li Chang-yu, forensic science entails the examination of physical evidence to determine whether a suspect in a criminal case has actually committed a crime, and whether the crime can be proven in a court of law.
拿出證據來李昌鈺指出，所謂刑事鑑識，指的是在刑事案件中，以物證來證實嫌犯是否有犯罪行為，或是證實罪名是否成立的一種方法。