Hakka Land is a large cultural tourism area in Meizhou, a city that strongly identifies itself with Hakka heritage. The site packages architecture, folk customs, food, and performance into a visitor-friendly setting, which can be useful if you do not have time to reach more remote Hakka villages.
It is interpretive rather than untouched, but that is also its advantage: you can get a quick overview of Hakka identity and then compare it with the city's museums, ancestral halls, and food streets. Go with a tolerance for staged culture and you may still learn a lot.