Um... don't be too sure about the pretty girls stuff. I honestly have seen a lot of unattractive girls and guys that were international students at my school. I originally thought that most Taiwanese girls would be pretty too(based on what I have seen from series, but then again those are just a small representation of the general population. Also, stars fix themselves up too) but not really... It just varies based on each individual...
My friend even told me that she saw in a Taiwanese series where a lot of the extras were ugly. She said that from the back, they looked like they would be pretty because they had long hair, were tall, etc... BUT, when they turned around... it was a different story....