Time Travel: the Sky Is Falling

I choked on drinking water and traveled through the world of cultivating immortals. The good news was that Goldfinger was a waste. The bad news was that Goldfinger was a waste. Situ Nanfeng, a sophomore, had an argument with his roommate in the dormitory one day. He choked on drinking water and traveled through the world of cultivating immortals. The god-man system asked him to save the world. But apart from complaining, what is Situ Nanfeng's best skill?