689. How do you know?

"That person told me that they were all having a great time after going up the mountain, but after taking photos in Xiaolin Peak Area 1, that girl went to talk to Lin Yucheng alone, and I even heard Lin's boyfriend's name mentioned. Since then, Lin's mood has been down, all the way until just now when she had a big argument with her boyfriend and left the group,"

"What does this have to do with finding the missing person?"

"I don't know, maybe nothing. But it is certain that Lin Yucheng left the group due to emotional issues. Since she left without saying anything, it means she intended to avoid the others. With that said, her subsequent route would not be the same as what the group had planned before,"

As Tang Shu was walking, she took out her map, which already had a long route drawn on it with a marker.