His friend's mother told his fortune.

Now that you ask, you are dubious, which means you don't believe it yourself. Since you don't believe it, you are afraid of what he will do. Just rest assured. I wonder why they know. Not difficult. Learn some psychology+deception, and you can solve it. That's the reason. If he can figure out why he is underdeveloped and still figure out others here, I won't believe people who have known each other for 500 years.

The future is changing all the time, and weather forecasting has been studied all over the world for many years. Countless scientists and computers don't understand. Who can accurately tell the daily weather in the next two months at one time means that he can be accurate, otherwise even if he knows history, how can he know the future?