Asian ladies around 35 in most cases look like they are 20 somethings. So what you want is really an Asian girl who looks like she is 15?
If you are hard and fast on your age rule, you will miss some beautiful ladies as they look 10-15 years younger than they actually are. So if you think a girl is in her 20's and or she says she is, chances are you need to add 10-15years to that.