What's the story of the tattoo on the face of the hero of the New Zealand romance classic "The Piano Lesson"?

The tattoo on the hero's face is called a "tattoo", which is a cultural form of the indigenous Maori people of New Zealand, who use tattoos to differentiate between their status, ethnicity, and social hierarchy, the more tattoos they have the higher their status will be, while women only have the lower part of their lips tattooed. Bain is an Englishman, why did he get a face tattoo? Actually this is the director telling the audience that he is a westerner who has been assimilated into the Maori culture, he is illiterate but knows the Maori language so he can act as an interpreter and coordinator between the whites and Maoris, and it is also because of Bain's identification with the Maori culture that he has gained the trust of his tribe to get the tattooed face because not every outsider has this honor.

In addition, he is not a prisoner, Australia is the place of exile of prisoners, New Zealand as a British colony in the beginning was treated as a piece of moral purity to exist, in order to establish New Zealand as a utopia in the hearts of Westerners, the government even considered that it should try to select the best, hard-working British as the appropriate immigrants, the place of banishment of prisoners that you are talking about is in fact Australia, which is not far away from New Zealand. At the beginning of the 19th century, Australia was known as the dumping ground for the British, prisoners, vagrants, infectious diseases, lunatics, all were shipped to Australian prisons for confinement, the initial Australian administrator was actually the warden of the prison, sustenance was shipped from the UK, Australia did not produce locally, which created a heavy economic burden for the UK, and it was not until the prosperity of the sheep industry that Australia turned into a wealthy colony.