Among the southern Chinese, the Hakka people can lay claim for being closest to the Han heritage of north/central China. Just look at the Hakka dialect which is closest to Mandarin with Hokkien being the one with the lowest intelligibility with Mandarin. Hakka cuisine, opera and folk songs (not many people here understand them though) are indeed close to those of the northern Chinese. The Teochews too like the Hakkas are late arrivals from north China (Shanxi) can can therefore be considered slightly 'more Han' than the Hokkiens or Cantonese.