Which bus no. goes from Northern Polytechnical University to the Xishaomen Airport Business Hotel?

It is only 0.8-0.9mi between. You can take a taxi to reach exactly at the cost of CNY7. By bus, take bus no. 503, 322 or 24 at the West Gate of the University and get off at Xishaomen at the third stop. After getting off, walk south along South Laodong Road for 3-5min and you can find the hotel on your left.