? My wife added a man she met in an online game. The chat on WeChat was vague, with explicit chat and private photos of herself. What should I do?

I can see that your daughter-in-law has no sense of shame about you and this family. She didn't look back until she hit the south wall.

She won't listen to your efforts. You can only talk to her parents about your ideas and see if she can listen to their suggestions. If not, she can only let go.