Lu Yan, 22 years old, is a recent graduate of the criminal investigation technology major of the Criminal Police College directly under the Ministry of Public Security. He is ranked among the top three in his major. He is proficient in trace examination, criminal psychological profiling, and scene reconstruction. He has a calm and delicate personality and excellent observation skills. With the belief of "evidencing crimes with traces and seeking murders with the heart", he gave up staying in school and a stable job in his hometown, and was admitted to the Serious Case Brigade of the Criminal Investigation Detachment of the Lingzhou Public Security Bureau, which ranks first in the country's homicide detection rate. This is the main line of growth for new criminal investigators from scratch.
