to take enough money is always a good advice.

My experience in many places in China, you can find a machine that will do. Maybe not as convenient to find as in the USA but manageable.

I don't know the setup of your trip, but generally you don't need much - unless you go for some kind of massage

Breakfast in the Hotel and Hotel can be paid with International CC
Lunch: invitation, jummy Chinese lunch box (take some Ketchup for the taste) or pay your own lunch but can not be expensive (10$ to anything)
Dinner: invitation or self pay (same as lunch).

Taxi is cheap too.

If you go for souvenirs or sightseeing you may need more.

Depending of the duration of your trip you can manage with cash taken from your country and change in the Hotel etc.

No worries.