Why are there a lot of Chiu Chow people in the Hong Kong Kingpin movie?

The people of Chaozhou (Shantou) were many in the pre-liberation period and up to the 1970s and 1980s, when they went to Hong Kong to develop or to escape from the war, or to sneak across the border.

The fine tradition of the Chiu Chow (Shan) people is unity, diligence and mutual help. This trait can be said to be very distinctive in the country, and there is no other region where people are as united as the people of Chaozhou! Therefore, most of the Hong Kong kingpin movies based on Jianghu righteousness and gangs will have Teochew people