Yāndǔxiān (腌笃鲜) is a Chinese soup dish from Shanghai and Jiangsu province (aka Jiangnan region).
It's made from a duo of cured pork and fresh pork with fresh winter bamboo shoots and tofu skin.
Many Chinese dishes have names adopted from folklore.
"Yān" means salted pork, and "dǔ" represents the sound of the boiling soup, and "xiān" describe the delicate flavor of the soup.
Common ingredients are pork ham shank, bone-in ham, fresh winter bamboo shoot, fresh ginger root, ground white pepper, pork stock, water, and scallions.