They lie coming back into the country. Just like they smuggle in their diseased birds, lizards and the like. China is a filthy place with no sense of sanitation.
All true.
The Chinese believe in ONLY two things: luck and money. So, cleanliness, honesty, things like that aren't important.
What is so repulsive is that they think that their culture is superior to all others. India, the other OLD country, is similar but not NEARLY to the extent of Chinese.
I think that the Chinese are THE MOST clannish people on the face of this earth.