Language Atlas of China
According to the "Language Atlas of China", Ganyu dialect is a kind of Zhongyuan Mandarin, but this is disputed. Some linguists regard it as one of Central Plains Mandarin like Xuzhou dialect because of same evolution of the entering tone in ancient Chinese with Central Plains Mandarin. But some linguists think of it as a kind of Jiaoliao Mandarin because of same initial consonant system. In fact, Ganyu dialect shares more common vocabulary with Jiaoliao Mandarin. It is a little difficult for a man whose mother tone is Central Plains Mandarin to understand Ganyu Dialect.