My good friend Xiao Fang often goes to Internet cafes to play games, and his grades have plummeted. How can I persuade him to realize the harm of indulging in the internet?
Suggest that he look at the situation, including personality, preferences and so on. As for the rhetoric, you euphemistically said, "Online games are like the moon in the water. They are all virtual. There is no need to ruin yourself for this invisible thing." You need an aphorism, that is, "If God wants it to perish, he must first make it crazy."