It is estimated that the main reason is that the water quality of Yangcheng Lake is clear and transparent, with good running water and high transparency. It is also rich in minerals, with a high proportion of calcium, magnesium, silicon, aluminum and oxygen, making it an ideal place for crabs to settle down and grow. Second, Yangcheng Lake has shallow water and hard bottom, and a good bottom, which is more suitable for the growth environment of crabs. Third, Yangcheng Lake has a suitable climate, and Jiangsu is the southern region. The climate is pleasant and people live comfortably, which is even more comfortable for crabs.

Most importantly, crabs in Yangcheng Lake love sports, because the geology at the bottom of Yangcheng Lake is difficult to adapt to the daily activities of crabs, which makes Yangcheng Lake crabs unique among crab families. The outstanding features are: green back, white belly, golden claws and yellow hair, and its meat is tender and delicious. Therefore, Yangcheng Lake Crab enjoys a long-standing reputation overseas, and is known as "China Golden Fleece Crab". This is the same as the muscles of people who exercise regularly.