Mr. Gu, your wife is

"You said they have a daughter" They've never been heard to mention having a daughter.,The other party nodded, then smiled mysteriously: "I didn't expect that in the investigation of Mu Weijun's disappearance that year, it was discovered that his wife and Xu's mother were best friends, and Mu Weijun and Gu Zhi were classmates.",So, if we find the little girl, we might be able to find the key。