visa free travel

Hi I have New Zealand passport which has 15 days visa free travel to China. Am I able to travel to Kunming for 13 days then leave China to visit Macau for 1 day and return back to Guangzhou under the 15 days visa free arrangement for New Zealand citizens? Is entering Macau consiered as leaving China and allows me to re-enter China again for another up to 15 days?