Analysts estimate that up to 30 per cent of Macau 's gaming revenue could be channelled through illegal channels . ` Macau tolerates illicit means to transport money into the former Portuguese territory . Underground banks using human mules to transport cash across the border . Macau had record tourism revenues from 16 million mainland tourists last year .
Macau tolerates illicit means to transport money into the former Portuguese territory . Underground banks using human mules to transport cash across the border . Macau had record tourism revenues from 16 million mainland tourists last year .