Li Ze glanced at Xie Qi, then turned his attention to the clues laid out on the table. He picked up a family portrait and said, "Fifteen years ago, the older son was seven years old. The photo is in color, and even from his infancy, it's only been seven years, so there wouldn't be a huge time gap. There won't be much difference in the photographs either."
As he spoke, Li Ze took out the baby photograph found in the victim's father's wallet. "This photo is in black and white. Regardless of the material or image quality, the technology used goes back at least several decades. It looks more like a picture taken when the old man was young. So I suspect these two baby photos don't belong to the older son and the younger son."
Li Ze continued, "If they aren't the photos of the two grandsons, they should be the son's photos—meaning, photographs of the victim during his infancy. I was puzzled earlier as to why there were two babies in the photos, until I saw this letter."
Chapter 371