Gulou Road, Yuanzhou District, Yichun City, Jiangxi Province. According to Baidu map, the address of Yichun Laohei Pig's Foot Shop is located in Gulou Road, Yuanzhou District, Yichun City, Jiangxi Province. Pig's feet are also called trotters and pig's hands. There are two kinds before and after, the front hoof is straight and fleshy, and the back hoof is curved and fleshy and bony. Traditional Chinese medicine believes that pig's trotters are delicious food similar to bear's paws and a "good medicine" for treating diseases. Trotters are rich in collagen.