Is there a big difference between Shaoxing dialect and Shengzhou dialect?

I come from Shengzhou and work in Shaoxing and Zhuji. I think I have more say.

If you are a child (under 8 years old) in Shengzhou, it is generally difficult to understand Shaoxing dialect.

Older people in Shengzhou can understand Shaoxing dialect, while Shaoxing people can't understand Shengzhou dialect. It is estimated to be around 20%. Xinchang and Shengzhou are basically no different. There is no problem in communication. Zhuji dialect is divided into two schools, one is Shengzhou accent and the other is Shaoxing accent. But no matter where people are, it is basically no problem to go to other places for three months.

As for Shangyu, it is similar to Shaoxing accent.

Shaoxing dialect and Shengzhou dialect are still very different.