I think you're talking about the novel. They have changed the script alot compared to the novel. I don't want…
Yeah, unfortunately LCZ's character (the white hair guy) is not that prominent in the drama compared to the novel. I guess from the production team's point of view, it would have been hard to film every scene twice for the 2 characters of cheng yi and also post editing would have been a pain so they reduced LCZ's scenes and gave more scenes to LSF's character instead.
OK, I did some research might not be true. It turns out that the ML and the villain look the same, and they're…
I think you're talking about the novel. They have changed the script alot compared to the novel. I don't want to spoil the drama for people who don't know much about the story so I won't say more.
No, CY has three characters. The main protagonist is called Xiao qiu shui who is the brother of FL. The white haired character is called Li chen zhou who is already married and his wife is played by Ding Xiao Ying. Plus this is a wuxia drama, romance is usually not that well received in this genre, I think it's good that they're siblings.
The drama hasn't even aired yet, how are people supposed to know they're siblings?? Why do you act like a know it all when you yourself have been wrong so many times before? 😂
K-Drama 
FL is a support role even in the novel.
The white haired character is called Li chen zhou who is already married and his wife is played by Ding Xiao Ying.
Plus this is a wuxia drama, romance is usually not that well received in this genre, I think it's good that they're siblings.
Why do you act like a know it all when you yourself have been wrong so many times before? 😂