Student visa query

I am considering moving to China to study at a language school. The school has provided information on how to obtain on as I need to come on a L type and on arrival with the school we apply for a X type.

My query is does a X type enable me to travel in and out of the country because during the holiday season I would like to go abroad to visit family/friends but I am not sure if a year long student type will permit me to travel out of China?

Any information on this issue would be very much appreciated thank you.