The theme is this 不要不要 song by Genie Chuo (this was the best video of it I could find on YouTube):
TELL ME THAT SONG ISN'T CATCHY. 'Cause it is. Even if I don't understand all of it.
Watching the show makes me realize that my Mandarin vocabulary is perhaps bigger than I thought. Maybe if we watch shows in Mandarin around Evie, she will pick up more of it. :)