Because the Machining Core believed that the Hell's Movie Club would restore his soul after the movie ended, he made this deal.
What the Machining Core traded was precisely the prophetic fragments from the secret god.
He... He would die tonight.
At night, when he who sleeps in room 420 of Quan Yun Apartments suddenly had to urinate, the moment he entered the restroom, his skull would fall to the ground. He wouldn't even have the chance to use his skills and Special Props. Even more terrifying is that he didn't know how he died.
This also suggested that he didn't know how to precisely avoid his own death. He asked the secret god about it, but the latter informed him that the soul he offered was insufficient to trade for this information, in other words, the secret god knew, but couldn't tell him.
Why was this so? Of course, the Machining Core understood. Once he knew the truth of his death, he would do everything to save his own life, meaning altering his own destiny.