I repost other people's comments. Why are the comments of people I know displayed on the person who posted the comment? Will the person who posted the comment see it?

Because the person you know may also know the person you forwarded. Generally speaking, after you forward it, it will be an independent comment. It has no relationship with the previous one, and then new comments will appear under your own comment. So for this person you know, if you find him in other people's comments, it only means that he is also good to others, and you may not know it. Then if his comment is posted to the person who posted it before, then the person who posted it will see the comment. But if you didn't inform Aite about this thing you forwarded, she wouldn't know about it.