I went to vist this beautiful village of Yongding in 2005 with some friends. We went there from Xiamen by a van and on the way to Yongding we stop at several villages and the food was indeed home cooked type of the Hakka people. The village people are mainly Hakkas and speak their hakka dialet which sound a little bit Cantonese and Mandarin. I was surprise to see that all those Tulou were quite well maintained and liveable.
I think goverments with large population should learn from the Hakkas on this type of housing programme. Would condsider another visit soon.