This paper presents a study in which mobile technology was used to build a mobile app for the promotion of regional Chinese culture. We used traditional Cantonese nursery rhymes as the basis for our work. These were recorded as sound files, illustrated and combined with Augmented Reality technology to create a multi-sensory experience for the user. We used Android Studio to build the application and implement the main functions. Unity3D was used to implement the AR functions. The purpose of developing this app is to promote the culture of Cantonese nursery rhymes and assist in classroom teaching. For the testing, the primary school students are mainly supplemented by foreign friends. In the process of using this app, there are three small games built in, each of which can learn Cantonese nursery rhymes. The app was evaluated in a primary school classroom-teaching environment. More than 1,000 students were exposed to it over a period of five days. After a week of trials we returned to the school to conduct a return visit survey. We are constantly making changes and improvements to the app following feedback from schools.