The Sword God in Xia Shilipo

When others travel into another world, they often bring with them some weird golden fingers. Zheng Bufan is different. He traveled through time into a novel he wrote, and his experiences were completely different from those of the other protagonists. First, he stayed on an isolated island called Shilipo for five hundred years, and then as soon as he came out of the mountain, he found that anyone could crush him to death. That's all. Not only does the system in his body not give him any secrets from the Immortal Family, it actually wants to accept him as his disciple? ! The weirdest thing is that there is a "Zheng Bufan" outside who says that he has not traveled through time at all! Zheng Bufan was stumped. What kind of protagonist is this? He has been the grandpa in the ring... He parasitizes others and becomes a system... Zheng Bufan was speechless. Why did he feel that he was not the protagonist, but the supporting character who assisted the protagonist? !