You should be talking about konjac shreds, served cold. Also called konjac (jǔ ruò), it is low-fat, low-sugar, low-calorie, and cholesterol-free

It is usually put in hot pot, it is full of gluten, it is also delicious cold, and the calories are not high.

The main varieties include konjac vermicelli, konjac silk knots, konjac vermicelli, konjac tendons, konjac plum blossoms, konjac butterflies, konjac shrimps, konjac tofu, konjac noodles, etc.