What kind of fruit tree is called Gengdou?

"Gengdou" may be a local pronunciation (this is how we pronounce it in Dongguan dialect), and it is not necessarily written this way. After asking agricultural experts, the scientific name is actually "Jindouzi", which is the same as another fruit-wealth.

Zi (also called Phoenix Eye Fruit and Qijie Fruit) is a must-have offering for Chinese Valentine's Day, symbolizing the vision of a better life with "lots of gold" and "wealth".