my friend is going from delhi to harbin, but has connecting flight from qingdao for around 5 hours.

1Q)can she go outside from airport at night time(she is landing at 2.30 am)(2Q)how can she go inside again(in airport)(Q3)if i meet her i want to go to near macdonald for snack,is there any macdonald cafe near airport please give me adress and how far is it from airport,,please help me i am urgent please