This lady's job is to clean the tables and manage the drop-off area for dishes and garbage. You'll find here on the 3rd floor of the east campus dining hall, the one I usually frequent - she has become one of my friends (even though we can't really converse). She is my "dining hall lady". Since returning to the campus this summer, I've presented her with 2 boxes of American candy (at her request). When I handed her the first box, she was so delighted she happily went from one dining hall "colleague" to another sharing the goodies. Seeing that generosity on her part delighted me all the more. The common folk are sometimes the best!
In case you're wondering, the two fellas in camouflage are Freshmen students receiving their initial military training and "education" before starting classes. Such training is required of all incoming Freshmen throughout China, mandatory as I understand since 1989.