At the end of semesters, I've seen the kitchen sinks in dorms

were filled up with unfinished Chinese food(dumpling, noodels, bums, etc). All students in that dorms had to pay fines. My kid told me that he had cleaned their mess several times, he only cooked 1-2 times /semester and always clean after himself. So many students tend to choose dorms that have less chinese students in the next semester.