From Taiwan:
Cape No. 7 - a pretty straight-forward romance box office hit
Lovesick - just your average rom-com (with the same actors that are in In Time With You)
One Day - a romance movie, but with a kinda time-travel-like theme...
From Mainland China:
Aftershock - not a romance movie, but it's a really heartfelt portrayal of the devastating earthquake that shook China in the 70s... I'd call it a must-see ^^