I'm a theoretical computer science PhD student at Georgia Tech -- my website has all the details: http://www.(email hidden)/~yxiao32/
Ying was an excellent, considerate guest during his time in Pittsburgh. He was respectful of our scheduling needs despite having a busy work schedule while here. He comes with our most enthusiastic recommendation!
Ying is a great guest. Very polite, on time and with minimum requirements. Even his suggestion of updating the photos of the room is very useful.
Congratulations on your first half marathon.
Ying was very friendly and charming. We enjoyed his visit very much. Come back anytime Ying!