Macao has a pair of bays, one in the north, one in the south, each as round as mirrors and rich in oysters, giving Macao its old name: Haojing'ao, or "Oyster Mirror Bay."
濠鏡閱書報社與培基學堂澳門有南北二灣，灣邊規圓如鏡，於是有「濠鏡」的舊稱。