Bamboo tube rice is the dietary custom of which nation?

Bamboo rice in Guo Dong, Wuyi, Zhejiang Province has been circulating for nearly 200 years. The village is full of bamboo, and the villagers eat Wuyi bamboo tube rice without bowls.

Eating with bamboo, villagers put rice, corn and other things in bamboo and bake them on the fire. This kind of rice smells good! Later, the villages on the border also ate like this!