Gu Nianzhi's words were not groundless.
Ever since they had come to C city to investigate Qin Huichang and his wife's former colleagues, neighbors, and friends, they had classified them according to how close they were to each other.
Of the three people they had found, the first was a colleague who had been admitted to a nursing home. This person was not very close to them, but he still remembered what had happened decades ago.
The second person was the old woman they had found in the neighborhood yesterday.
From this old woman, they had a qualitative breakthrough.
Gu Nianzhi could almost guess who her biological mother was.
So today, Gu Nianzhi had long been mentally prepared for the third person.
This person was definitely the one who knew the most about the past.
He could have been good or bad. Of course, he could have been a bystander.