The romance was a bit lackluster for me, so I didn't ship anyone with the FL & didn't end up swayed to anyone's side, but here are my thoughts:
Prince Li: I was "meh" on this guy from the beginning but he improved as the series went on. His character did not have as much depth for me & I felt disconnected from the love story. Like, I didn't really care about the romance in this story; it's like it got sidelined or downgraded from the level of importance I anticipated even after all of the heartache they went through to be together. Rong Le & his story just wasn't satisfying enough for me.
Rong Qi: We were lucky enough to have Leo in this role, who just nailed it. Everyone knew he saw her as more than a sister from the get-go but it was subtle enough to just be creepy & uncomfortable rather than outright incestuous-looking. I side-eyed him the entire drama, wary of him waiting to use his weakness to detonate a suicide bomb to kill some other characters along with him. He just wasn't in the story often enough, though. Another character who I felt little sympathy for.
General Fu Chou: omfg, general Fu Chou stole the show. Love him or hate him (well, you were supposed to hate him & I would say the actor who portrayed him did an EXCELLENT job making you hate him) he had the most complex character, the most complicated backstory, & the greatest range of emotional exchanges out of the entire cast. I would even say he was the real ML of the show even though Prince Li gets the girl. Think about it: even though the title was "Princess Silver," it was HIS revenge story with a bit of all the other stuff mixed in to keep it interesting. (And boy, was it interesting. A bit crazy at times, but definitely interesting.) I am planning to look for some of this guy's other dramas to watch next. :D