Re entry visa macau for thai citizen

Hi, if I hold a thai passport and I enter Macao and gets a visa on arrival for 30 days but I leave after 2 weeks to Hongkong/Shenzhen and get back to macau same day or after 1 day will I be getting a new visa on arrival for 30 days or does there apply another rule? Coz I heard I will be having a visa on arrival for 20 days and if I do the same again I will be getting visa on arrival for 10 days. Could anyone please help me wit this. Thnx in advance!