Chinese, Japanese, and Korean are three different ethnic groups belonging to East Asia. They share many similarities in their cultures, appearances, and languages. These similarities might be due to their common ancestry. Their most recent common ancestor dates back to 3000-3600 years ago.
Chinese, Japanese, and Korean differ largely in their facial features, notably eyes. Where Japanese eye shape is round or oval, Chinese eyes are angular, and Korean eyes are generally almond-shaped. Chinese eyes are slanted downwards, Japanese eyes are slanted upwards, and Koreans have the smallest eyes of all three populations.
Similar differences can be noticed in their face shapes with Chinese having rounder faces, Japanese having long and wide faces, and Koreans displaying sharper jawline and prominent cheekbones.