delicious beef skin vegetables. The unique flavor and the root of Yiwei Niupi Cai are the handmade and secret delicacies of the Dai people, and it is a special local food. The brand of Yiwei Niupi Cai is delicious. Cowhide vegetables, also known as thick-skinned vegetables, originated in Europe, and were introduced and cultivated in China Yangtze River and its south area.