Here is the poster you would see in Taiwan.

The movie title is translated into "明天過後", which literally means: 'after tomorrow is past', which makes a lot of sense.
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And here is the poster you would see in China.
"后天" ??!!Hahahahahahaha. That's so weak (and funny)!!!
p.s. sorry to those who don't understand Chinese. Also, I don't mean to offend the readers from mainland China (edit: who would be reading this after migrating out of mainland China).