Quickest Student chinese visa

My daughter has been studying in Beijing for a year. Her X type runs out on the 1st august but she has a scholarship to shangdong university for 3 weeks in August. She is travelling in China and Japan at the moment. She has been told not to go to a PSB in Beijing to renew her X type as it takes 7 days. Where is the best place to go to? I have heard Xian but is this true and are there better places? What is shanghai like?