"This is not true for China. Or Korea or Thailand. Because they are a single ethnic group." Well true for the most part. China's largest ethnic group being Ha

"This is not true for China. Or Korea or Thailand. Because they are a single ethnic group." Well true for the most part. China's largest ethnic group being Han which outstrips the far fewer Zhuang, Manchu & Uyghur etc (order of billion to order of million).