(File photo)

On June 23, Lin Yuhui, a senior police sketch artist, drew an image of the suspect who kidnapped Chinese scholar Zhang Yingying from the vague surveillance video. The image later amazed American police, as it resembled the suspect, Brendt Christensen, who was arrested on July 1.

“After receiving the vague video clip, I asked three expert video analysts to examine each and every frame of the video with me,” Lin said. “The closed window made it hard to see inside the car.”

(File photo)

“We watched the video a hundred times for two days. Then, on June 19, I finally got a rough look at the suspect!”

(File photo)

Lin drew the suspect’s eyes first, and then he added hair and a beard based on the suspect’s age. “I felt he was around thirty years old, with a beard, sunken eyes, and a high nose.”

Lin turned the two images he sketched over to the police in America on June 20. “They were amazed by my sketches, as they couldn’t deduce anything valuable from such a low-quality video,” said Lin.