There is something like ginger, which tastes crisp and sweet. What is this? (Look at the picture)

Guizijiang, also called Yangjiang, is a kind of vegetable with strong vitality, but few friends grow Yangjiang. I saw it in a big pit in the village when I was a child. I didn't know if I could eat it at that time. I didn't dare to eat anything when I was a child, so I took it home for my mother to eat. After my mother finished reading it, I asked Chen Zi to lead the way and dug a whole basket of Yangjiang. Not long after, the piece of Yangjiang was dug up by the villagers. Mom took it back and salted it. At that time, she sent some past to her grandmother. Seriously, it tastes really good!