What is Ranzishu that Hakkas say?

Castanea henryi is a plant of Castanopsis in Fagaceae, commonly known as vertebrate tree, also known as Castanea henryi, Castanea henryi and Castanopsis eyrei. There are more than 20 species of Castanopsis 120, mainly distributed in Asia, with a few in western North America and more than 60 species in China.

There are many kinds of cones, among which hanging cones, red cones and South China cones are more common in Hakka areas.