It's interesting in the sense that they really put effort and heart in making this song! The lyrics is pretty simple for beginner/ elementary students. However, since Cantonese is a tonal language, writing lyrics is an extremely challenging task! The tone of each word has to fit in the note of the melody, otherwise, it would be hard for the listeners to understand. I admit it took me a while to understand the first two sentences the female singer is repeating.
Hong Kong kei4sat6 ngo5dei6 fei1seung4 zi1 gwa3zyu6 nei5,
Hong Kong kei4sat6 ngo5dei6 fei1seung4zi1 seung2 faan1faan1 lai4