I have seen recently two series with Zhang Wan Yi, and I liked both, so I have checked LYF too. I couldn't watch the entire series, because the reversed harem concept is not for me, but I have seen the compilation videos made with Cang Xuan-FL and Xiang Liu-FL scenes. I haven't watched the videos on Tushan Jing-FL, because he was already in some scenes of the other videos, and it was enough for me to have an opinion on him.
I wasn't sad by the ending of LYF2, because for me it's evident that FL will end up (later on...) with Cang Xuan, in some way or an other. Of course it's not included in the series, because audience like "sad" endings, but with the personality of FL (smart, strong headed, capable, active character), it's impossible for her to stay with a man for a lifetime, who has no ambitions, no plans, no strenght, no own ideas. It was shown in the series that she hates boredom, and she will die from it with that character. So her wake up would be inevitable :D (and one of the closing sentence of the series was: "You are bound to meet one day" (talking about Cang Xuan and Xiao Yao).