According to the regulations, mainland residents outside Guangdong Province travel to Australia, and the certification materials required for customs clearance include: negative results of valid nucleic acid detection within 7 days; Complete the application for &”;Yuekang Code&”; and obtain the customs clearance certificate with the green code of &”;Yuekang Code&”;; Valid entry and exit documents. Mainland residents who need to use the &”;Yuekang Code&”; to travel to and from Macao can complete the following matters through the single entrance of Guangdong Province: 1. Apply for the &”;Yuekang Code&”;. 2. When entering Macao from Zhuhai through the Guangdong-Macao port, you should present the &”;customs clearance certificate&”; of the Guangdong-Hong Kong code to the mainland customs, and present the Macao health code to the Macao customs officers. 3. Enter Zhuhai from Macao through the Guangdong-Macao port, and present the customs clearance certificate of &”;Guangdong-Hong Code&”; to the mainland customs (it needs to be converted from Macao-Hong Code).