Hong Kong has have lots of these Mainland Chinese visiting on any day of the year since its return to China. For one thing, the way they lavished money on the pleasurable things (and effectively turning the big-brand name flag shops along Canton Road in Kowloon into de facto RMB deposit-taking companies -- look at the queues!) and more importantly in the property market has brought Hong Kong among the firsts coming out unscathed from the financial tsunami.
But among some of them, the spitting, sitting and squatting at improper places, the loud-speaking, queue- jumping and letting young children peep and poop on the street, to name a few, have brought steady cultural shocks to the Hongkongers every single time these behaviours are noticed.
Maybe the new year wish is that the Hong Kong way of conducts can be preserved for as long a period as possible.