2. Because in many forums and post bars, the posts that have been answered by messages will be classified separately. If you just browse a post without leaving a message, it will be more troublesome to look for it in retrospect, so it will be easier to leave a message "CY" in the post first, and then find what you need from the post that has been replied/participated in the discussion.
3. The word "eye insertion" first appeared in the DOTA game, which refers to placing a prop commonly known as "eye" at a certain point on the map. Our unit can observe the area near this eye through the "eye" and get some key information.
Nowadays, many people use the word "dazzling" in various posts, but it doesn't mean much, just as a way to mark individuals.