2. Among the specialties of the library in Mudu Town, Suzhou (formerly the library town), the most famous one is "mutton in the library". Collecting mutton has a long history. With its unique cooking skills, it has been cooked into various mutton dishes. Because its broth is delicious, delicious and nutritious, it is deeply loved by people. It is a good tonic in winter and has become a traditional Suzhou local flavor snack, which is popular in the south of the Yangtze River. After several generations of efforts, inheritance and development, it became a famous brand, and was officially registered as "mutton with books" by the State Trademark Office on 1997, realizing industrial operation.