My wife and I did a guided tour in China, and she is a picky eater. Our experience was that breakfasts in the hotels featured bread and other foods that will probably suit you. Eat a big breakfast, and don’t be afraid to grab a couple of rolls to take with you.
Our tour featured us eating in large restaurants that could handle +/- 60 people showing up at once, so I likened it to coming to the US on a bus tour and eating at Golden Corrals and similar places that handle busses full of people. So, I suspect we had pretty lousy cuisine tailored to tourist groups. We usually had a bunch of plates delivered to our table and placed on a lazy Susan. There was always white rice. Usually a couple of chicken dishes, a fish dish and other stuff. You kind of took a little of what appealed to you. My wife ate little other than white rice, while I tried a lot of stuff. I didn’t think much of it was all that good, but I still ate.
We also walked through several street markets where people were selling stuff that looked pretty revolting, like starfish and squid on skewers sitting out with no heat or refrigeration. Lots of eels.
We saw a lot of KFC restaurants, and quite a few McDonalds. We did’t try any of those, since I don’t really like them here. But others on our tour did… and they said it was kinda familiar, but kinda different, too, and not very good.
Most every meal after breakfast had beer that we could buy for a dollar. The bottles were larger than normal, probably a liter each. The beer was always light pilsner style, very low in alcohol (I think it was only about 2 %). Fairly refreshing, if not having a lot of taste. While you’re there, make sure to try baijiu, which is a Chinese liquor, and reportedly the most consumed alcoholic spirit in the world. I suspect you won’t like it, as most people from the US and Europe hate it (me included), but you might as well give it a go while you’re there, in the spirit of adventure.
Oh, one final thought. My wife packed a small backpack with beef jerky, peanuts, candy and other snacks. And I mean a whole backpack full. She was very popular on the bus after a few days when everybody was tired of eating lousy meals. She made sure to ration the stash to last all nine days.