According to the tour guide, in the apartments with immigrants from mainland China (PRC), residents tend to add cages to windows so that they have an extra room. At night, children can sleep outside on the cage balconies.

This barbed wire is to prevent mainland Chinese from crossing over into Macau and was built when it was still a Portuguese colony. Now, many of the rich Macanese live in Zhuhoi, as it has a lot more space left for building than Macau.