I had areturant in Ching Mai night bazar for 10 years .Had 1 table of 6 Chinese , PIG the lot of them food every , spit , and demand 70% discount. Said now worries . All staff said no more chinese 10 minutes later they had put up a 1x2meter sign up out front , by the end of the week another 16 restaurant's had the same sign out front PIGS the lot of them