1. Historical background: Due to historical reasons, the communication between Guangdong, Hong Kong and Macao is very frequent, which makes the language and culture in these areas closely related. Therefore, Cantonese in Zhuhai and Shenzhen is also influenced by Hong Kong and Macao, which makes their pronunciation and accent closer to standard Cantonese.

2. Geographical location: Zhuhai and Shenzhen are both special economic zones and frontier cities of reform and opening up, attracting a large number of immigrants from all over the country. In the process of integrating into local life, these immigrants also promoted the spread and popularization of Cantonese.