Why do Hong Kong movies always mention chaozhou people?

Hong Kong people have a strong sense of region, and most of them immigrated to the past before and after liberation, with mixed races and can be seen everywhere.

Compared with Hongkong, the number of chaozhou people is not the largest, but it is scattered in all social strata and relatively United, so it is famous.

For example, it is the same reason that Wenzhou people are famous in China and Hui people everywhere are famous.