Ding Yuwei gave a wry smile and shook her head.
"Captain Sun handled this case personally. I read the file. They investigated every possible lead, so what useful information do you think I could possibly find?"
In 2011, Sun Zhao was still a deputy captain, and his professional skills were top-notch.
So, just as Ding Yuwei had said, Sun Zhao must have investigated every possible lead.
Shen Xin flopped back down onto the desk, his thoughts turning to Guo Chunping's investigation of Liu Laibin.
The statements from Li Weiqin and others had helped piece together more of the details.
Guo Chunping had indeed searched for a full year.
His method was the same as the local police's: canvassing and asking questions. There weren't many special techniques involved.
Li Weiqin seemed to know a bit more. He said Guo Chunping just rode a motorcycle up and down that road, questioning the drivers of any trucks he saw stopped for a rest.
He also jotted down license plate numbers.
