What's the name of the red pickles in Tianjin pancake fruit?

Tianjin people are most particular about eating pancake fruit, which is made of bean paste. Put eggs, add a ham sausage, add two slices of lettuce, brush with yellow sauce and hot sauce, and put small pickles. This pickle is diced spicy radish.

Red diced pickles and radishes are widely used in some Chinese dishes, such as mixed cold dishes and hot pot bottom materials, which can add a hot and sour taste to the dishes and provide additional texture and taste.