tropical climate asian populations developed heat adapted traits such as brown/darker skin,wider noses,mild form of prognathism,thicker brow ridges and fuller lips than northern asian populations(not all of course but generally speaking) the thicker brow ridge,prognathism and darker skin traits in particular gives our women a stronger or more mature look/
northern asians have cold adapted traits such as lighter skin,smaller noses,smaller lips and it gives them a weaker,softer and more youthful look .. of course there will always be overlap between various asian ethncities and you'll see many cambodians/southeast asians who look very similar to northern asians and vice versa.
southeast asian/cambodian prognathism on women combined with brownish skin tone(pictured below).....these types of features can never pass for chinese,korean,japanese or even vietnamese....some non-asians may think so but we asians can easily tell and these are obviously region specific,heat adapted features(southeast asian)
northern asians with cold adapted traits
pretty korean woman, attractive in a cute way