"A doctor in Laguna Beach has developed a new laser technique that allows people with brown eyes to turn them permanently blue. How is this possible? Brown eyes are actually blue underneath, but there are cells on top of the blue pigmentation that turn them darker." Source
Holy shit, that's pretty cool
Who cares about simplified mandarin. The only problem here is that Cantonese (and Hokkien) is no longer being taught, but guess what, times change. There have been thousands of languages that have been lost to the ages, you'd be pissing in the wind to try and stop that.