i think asians tend to look younger because they don't drink milk with growth hormones in it or eat other genetically modified food. haven't you noticed that most americans look much older than their actual age? i can still pass as a high school student despite being in grad school. Maybe they should stop using too much growth hormones for their cattles.. just my opinion. besides, even if these chinese kids are 15 instead of 16, I am still amazed by their skills..