Can taxis from other places operate in Suzhou
Of course not. Taxis have their own operation scope. Generally speaking, they can't get on passengers outside the specified operation area. However, it is generally allowed to carry passengers out of the city. For example, if you take a taxi from Shanghai to Suzhou, it can take you there. However, it should return to Shanghai immediately after you get off the bus, and it is not allowed to take passengers before entering the Shanghai border.