There are a broad range of hotels in China, so there is a vast variety of what you may see on a breakfast buffet.  Yes, I did say buffet, which is what most hotels have. Some of the nicer hotels will have a menu from which you may order.  At a less expensive hotel, the only things an American may recognize are boiled eggs.  By the way, sometimes the eggs will be a dark green, and they may already be sliced for you.  This is a wonderful opportunity to be adventurous and try some new foods.  I have enjoyed many surprises on the breakfast buffet!  At a nicer hotel, you will see more western food along with the Chinese food.  You will have to check with the front desk about paying for breakfast as, in some hotels, breakfast is complimentary.