FME most Whites and Blacks from the heartland average about 5'9 to 6'0. With the average probably being around 5'11. Most heartland Whites are from Germanic/Scando stock in the Midwest and English/Scotch Irish stock in the South so they are among the tallest people in the world. Most African Americans are about 80% West African, who are naturally among the muscular people in the world, and 20% mixed in with Northern Europeans. In addition, the American Indians in the plains are among the tallest in the world. So most of the older racial stocks in the United States rank among the tallest and most robust races in the world. In the large blue cities, many of the Whites there are from Southern European, White Latino or Jewish stock and not as physically robust or tall.
For example, check out this video of "Hell Right". This is pretty representative of a crowd you'd see in the rural Midwest or South. Trace Adkins is a towering 6'6, Blake is 6'5 and Hardy is about 6'0 and he is dwarfed by the other two.
As far as the Beijing video goes, crowds in cities like Beijing are not representative of actual Northern Chinese stock because many of the big cities in China are magnets for migrants and tourists from all over the country so many of the people you see on the streets are not native racial stock to that region. Rural Northern Chinese are similar to these people (definitely not as tall as native American Whites and Blacks, but range about 5'8 to 5'10 on average and definitely taller than other Asians, Latin Americans, many Africans and even Southern Euros). Many are pretty robustly built unlike many other Asian races. Many of these Northern Chinese rural folk would probably get along really well with American rednecks if politics wasn't involved. Similar salt of the earth, tough people worthy of respect.