... I don't understand why you guys comparing the height of people based on where they live. There's variety of heights throughout China and in any other countries. Height is depended on your Genes. You either grow tall or short depending on whose genes you took. But it also depends on what you do with your life. Like, pregnancy, exercise, and your diet. But most of it, it depends on your genetics. I had a grandpa from my dad side whose 6 foot tall, but everyone else in the family was 5'4 ~ 5'5 because my grandma (dad's side) was only 4'11. It averaged out the rest of the family to be shorter. However, my older brother is 5'8 and my youngest brother is 5'6. My mom is only 5 ft and I'm only one inch taller than her. That's the highest my height will ever go no matter what I eat or what I do. It's genetics mostly.