I watched a Taiwanese movie called the eternal summer... Does taiwan really look like that?

The movie, even in scenes in taibei looked like downtown mainland Chinese cities in the early 80's/ areas remote from the downtown of mainland Chinese cities.... The buildings and homes were dirty and worn down. The streets weren't as motorized as I thought. They used bicycles alot like mainland china. I thought taiwan has living standards like Japan, the u.s., and hong kong? I have never been outside the united states and Canada, and will travel to the PRC in 2 weeks... Is Taiwan really not rich!?