internet - Google active in China

An interesting call I witnessed this afternoon. A fried here in Shanghai got a call over his landline, answered in Chinese all kind of questions. "It was Google," he said, a bit amazed. "The were checking whether the details I gave for Adsense were correct."
Since they called in over a landline, we could not see where the call originated from, from China or from the US. I will just change my data, so they only have mine mobile number.
One of the ways they stayed out of trouble, was be not being in China with a legal representation. Now that might have to change, as time moves on and this is an interesting signal.