2. Japan is a springboard for crayfish to enter East Asia. In the 1960s, crayfish were found in Japan, including Hokkaido, except some islands. Even the Japanese relative of Procambarus clarkii, the Japanese black crayfish, was almost killed by it.
3. In the early 1990s, crayfish quickly boarded the tables of vendors in Hubei, Anhui, Jiangsu and other places. Crawfish vendors are counting money, embarrassed and looking forward to going to the international market.
4. In order to adapt to the harsh living environment, crayfish has undergone a peculiar evolution in China, and new varieties such as spicy crayfish, fennel crayfish and steamed crayfish have been mutated.