Entering as a Tourist twice in 3 months

British passport holder wanting to enter China on a tourist visa on 23rd May 2015. I then have to return to the UK on the 15th July for my own graduation ceremony. I want to continue my trip, returning to PRC from the 23rd May onward. Is there an entry permit available to suit this situation? I've had several types of entry permit in the past 18 months for PRC including L, M, X2 if that makes a difference