If you don't speak any Chinese, it might be daunting to go to a restaurant and order food. Particularly when confronted by a large menu full of Chinese characters, or no menu at all.
So what to do?
First, look around at what others are eating, and if it looks good, ask for that (maybe check the price first).
Second, it is OK to walk into the kitchen, look around, and point at various things you would like to eat. Maybe go with one of the serving staff, so they can take your order.
Third, if you prefer, ask for no MSG or no chilli if you don't want to eat that food enchancer or don't like hot food (Chinese in some parts of China will eat more chilli in one meal that you eat in a year)