"If I were you, I would love you like I love myself. Am I you? No. So I don't love you."
This is a Chinese comedy about a radio host called Min and a bar hostess called Ai, who happen to switch bodies. Note that there are many movies with the same title and a similar scenario.
My first impression was that it is colourful and vibrant, with a lot of effort put into the settings, lighting, and visual expression. It seems fresh and modern. Character design, clothing, and makeup are also noteworthy.
The second impression was of a nice atmosphere where most people are friendly, with good intentions, and happy, with a lot of smiling. It's a world I'd like to live in.
The two main characters are presented in a strong way, each with their own monologue and prologue. They are well defined, with philosophies and flaws. Their comical episodes are built on wit and not stupidity.
The plot is simple, but does have a few small surprises.
The script is smart with some witty lines, and quite an amount of pseudo-philosophy added. Not original or deep, but it can give some intellectual stimulation.
What partially fails is the body-switching. In such scenarios you'd expect the characters to be preserved and have the same personality. This is not the case. For example Min is a calm and flirty guy, but the expressive female actress plays him as loud, violent, and whiny. The male actor is better as the character Ai - at least the lines are consistent with how Ai spoke in the beginning.
The movie does not contribute anything new to the lore around body-switching, which seems like a missed opportunity. Even so, those parts are lively and funny. The entertainment value would probably have been less without the antics of the actress.
What works better is the romance. They do a lot of fun and silly things together, creating a great chemistry. The emotional impact is not as great as it can get sometimes, but when it comes to casual interactions, it is among the most energetic I have seen.