Wenzhounese (), also known as Oujiang (), Tong Au () or Auish (), is the language spoken in Wenzhou, the southern prefecture of Zhejiang, China. Nicknamed the "Devil's Language" for its complexity and difficulty, it is the most divergent division of Wu Chinese, with little to no mutual intelligibility with other Wu dialects or any other variety of Chinese. It features noticeable elements in common with Min Chinese, which is spoken to the south in Fujian. "Oujiang" is sometimes used as the broader term, and "Wenzhou" for Wenzhounese proper in a narrow sense.