First of all, I only wanted to watch this movie because of Wa Er and Liu Chang. And their acting didn't disappoint me (though Wa Er had not as much screen time as I had expected). However, the fl wasn't quite as good and there are these typical overacted characters which are either funny or just easily annoy you.
The story is definitely quite weird. However, imo it's this weirdness and partly absurdity which makes this movie an interesting watch. But you have to enjoy ancient China, Chinese Republican era and sci-fi all at the same time. Also there are some plot lines that seem dumb or not well thought out but the last big plot twist/revelation is fun - so please really watch till the end if you decide to watch this at all!
Unfortunately I can't really score the music as it was cut out in many scenes in the YouTube version I watched due to copyright issues. As for the rest of the soundtrack I can't really remember which means it was neither good nor bad.

Overall, it was an enjoyable movie. Nothing extraordinary good but nothing too bad either. You should watch it if you like Liu Chang or Wa Er and if you have 69 minutes spare time.