They have no regard for others. I'm going to have a heart attack on the day that China has humanitarian staff to help countries hit by natural disasters.
They love to step on others and pass the leg. It is the Chinese Human Nature.
When Koreans go to Korea, they buy enough coffee to sell in Korea. The coffee is cheap here in Brazil, but it is quite expensive and appreciated in Korea. But the Koreans do not stink like the Chinese in such an essential commodity as baby milk.
You need to be very heartless and inhuman to treat your peers like doormat (or shit).