From looking through other posts, it looks like dining alone can be a problem in China. I'm only there for a few days and would hate to miss out on at least trying a few must eats, but not sure what those are. I'll be staying at the Park Plaza Wangfujing Hotel and attending some business meetings near there or at Renmin University during most of the days, plus I'll likely buy a tour from the hotel for one day and then spend a bit of time walking by myself.
I'm fine with street food, but don't speak any Chinese at all. I thought if I knew the names of some dishes or food items I could write them down and try to communicate that way, though.