The Synthesis System of Prehistoric Times

It's my first time to write a novel and I don't know how to write it, nor do I know any great masters, so I can only explore it on my own. I am relatively stupid and slow-tempered, so I apologize for the inconvenience caused to everyone! Thanks! What can I say, I used to be one of those who read novels. I felt that some of the novels I read during this period were fine in the early stages, but at a certain chapter in the middle and later stages, it felt like I had suddenly changed to another novel! The plot of the story is completely different, so I tried to get into novel writing myself. Please bear with me if I can't write well! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.