The alveolo-palatal sibilants are often used in the Chinese languages such as Mandarin , Hakka , and Wu , as well as other East Asian languages such as Japanese and Korean .
We often use the alveolo-palatal sibilants in the Chinese languages ( e.g. Mandarin , Hakka , and Wu ) , and other languages in the East Asian sprachbund ( e.g. Japanese and Korean ) .