I've been watching chinese dramas for YEARS (probably over a decade), and this is the only cdrama I've watched on repeat ever. The characters are well written, the romance is believable, and there's also an endgame/political setup that is emotional and worth cheering for. The female lead's setup is already intriguing, since it involves a female lead that has to (re)navigate her life decisions in a a thought-provoking way, and generally a male lead that is supportive of her throughout this navigating of the court intrigue/personal relationships. For me, the elements that make a truly wonderful and rewatchable drama are as follows:

1) Strong female lead - the female lead has to be written in a way that I want to cheer for her. There are a lot of characters out there, but the female lead has a strong drive/ambition and has a reason for wanting to accomplish her mission that to me reads as noble and worthwhile, while also being spunky and fun (and I absolutely love Bai Lu's acting, she is perfectly cast for this role). It's just super fun to watch a female character acting in her own agency and trying to navigate life

2) Excellent chemistry between both (all?) leads - really good believable chemistry always gets me. enough said here, their scenes speak for themselves :) this also links to that I want both leads to be believable in their chemistry. Good acting to me is where I forget they're an actor, but truly believe they are the character they're portraying, which is definitely done by both here!

3) Good pacing & political intrigue - love me some plotting for the dramatic tension in the storyline, and I think dramas really shine when both leads have a brain and work together, and get to know each other over a shared interest/smarts rather than just a love at first sight. the dramatic tension of first life vs. fixing things in second life also drives the plot and kept me on the hook; when I watch a drama, having it be interesting and an easy watch is v important

4) good quality costuming & scenery - I hate when other historical dramas look cheap or over the top, but I've aesthetically loved the costuming here :) one of the things I appreciate is seeing Chinese-style costuming and scenery, love that aspect of cultural exchange.

The whole support cast is excellent too, hope all the cast members get lots of awards for this show!!