What a delight this drama turned out to be! I was cautious with the strange title and mediocre rating, but this drama delivered a tight storyline with good pacing, endearing characters, and moving scenes. I started out this drama for zheng yecheng (and he was phenomenal, as always) and am so grateful that I ended up loving many things about this drama.

Abu Cha Cha is an alien who, during a crash, falls to earth and has to take over a body to live. This body is Tang Qing Ye who is the half-sister of Tang Qing Feng. (If you are worried about incest, please don't be! The story is definitely not going to be about that kind of thing.) Tang Qing Feng is an upright and capable court official and a master of Jian Wu Academy. He investigates corruption and strange incidents ongoing in the city and also takes on investigating the truth about who is trying to kill Tang Qing Ye. As Abu Cha Cha tries to find a way back home to Planet Duo, her life becomes entangled with Tang Qing Feng as they become involved in ploys for imperial power and must seek out the truth, learn to trust one another, and protect the ones they love.
It's nothing too new about the story and plot twists, but I enjoyed it greatly due to the strong performance of the actors and great directing. The scenes are beautiful, the emotions are there, and I care about the characters. The supporting characters, too, are endearing and have their distinct personalities. I'm even surprised that the CGI isn't too terrible! In the end, the drama delivers a well paced story with a satisfactory ending (of this season anyway; there's a second season that I've yet to watch!). The story is solid.

This is a fun and surprisingly heartfelt drama if you give it a chance. If you like historical romantic comedies, if you are accepting of the alien concept, then you should enjoy this. Of course, I should warn that the comedy is like Stephen-Chow type of comedy where there are slapstick comedy as well as deadpan comedy and just a lot of visual comedy (ex: while this one character was talking about something melodramatic, the characters blurrily in the background sat on the ground and ate food while listening). Or, I guess, the comedy is like if the manga Gintama was instead a Chinese historical romcom, lol.
This comedy can be off-putting at first if you're not used to it and can make the drama feel very much like just a comedy show, but I think it balances the comedy and seriousness well. The drama delivers the heartfelt and serious scenes well with great cinematography and a good OST that allows you to still immerse in the feelings of the scenes and feel moved for our characters still.
I really loved Tang Qing Feng's stoicism, sense of justice, and devotion. I loved Abu Cha Cha's sense of self preservation and obliviousness as it was funny but also cute and she learns to care about others beside herself.

Overall, I highly recommend this drama if you're interested in the above things I've mentioned!