Via JPM which says the hit will be 0.2% of GDP in Q1:
“Chinese visitors represent around 15 per cent of total short-term arrivals. Assuming Chinese arrivals are down by more than 75 per cent (similar to the SARS episode) for the next two months (the length of the ban on tour groups, for example), tourism industry data on the average spend of Chinese visitors suggests a drag of 0.1 percentage point of GDP in the first quarter.”
“We are downgrading 1Q GDP growth by 0.1 percentage point for both Australia and New Zealand, to incorporate the drag on services exports.”