I've been wanting to watch this show ever since I saw the trailer, as the genre is mystery (which I love), and I have to say that the scenes and sets are really beautiful.

Luoyang actually started off really well despite the first 2 episodes making me giddy watching it, then suddenly, it slowed down and the storyline became a bit odd from the middle (right after the reveal of 十六夜).

Basically, the good parts for me were the beautiful sets, the acting and certain parts of the story including the uncovering of truths and fighting at the back (not the ending ones, the last few episodes were ridiculous).

So, the bad points - A big issue for me was the excessively loud and creepy woman singing/screaming (?) BGM that appears too many times (basically whenever each mystery is solved / each truth is uncovered), and that BGM always comes out too loud and drowns everything else. It was so excessive that the BGM alone successfully made me 出戏 a couple of times.

Next, it is kind of disappointing how the assassin who "succeeded" 十六夜's role in the secret organization does not really have a presence/character per se. I kinda expected more from the villians, although I have to say I didn't expect Er Lang's brother to be one of the impt figures of the secret organization (I cannot rmb the name now as I finished this show at the beginning of the year lol) until after something happened and it got obvious.

Next, who can forget - the highly irritating Liu Ran and her unfortunately useless, trouble-creating family. It seems to me that the Liu family exists to serve as an obstruction and destroyer to everything.....😓 (Though I have to say, I was sad when her father died).
The anticlimactic and ridiculous ending was the highlight of the stupidity of the Liu family. I don't understand how her stupid brother can infiltrate the security and hide somewhere to assassinate Wu Si Yue's brother. It. Doesn't. Make. Sense. 🧐

Lastly, it's basically connected to the above - I don't understand why must Wu Si Yue be killed off...? Was the director just trying to create a really emotionally sad scene at the end and hence it happened...?

In any case, the last few episodes were so draggy although everything is already obvious, hence I think it's really unnecessary. The pace was slow even when I watched the last few episodes on 1.75x speed mode. I'm guessing, maybe, the editor(or director) wants to make the death of Wu Si Yue a highlight and 意难平 for viewers, but it's really... Unnecessary and kind of stupid (sorry to say that).

All in all, despite my many complaints (lol), I conclude that this show is really still worth a watch, but probably not a rewatch (at least not of the whole show).