X1 visa expires July 31

Hi guys, I'm currently studying in china and my student X1 type expires on the 31st of July, my family lives here because of work related stuff, the case is I need to extend my X type for 3 months (this summer) because I'll move to Japan at the end of August because my university course starts, my family wants me to extend the X type until it is time for me to leave, but how can I do that ? My course is already ending next week. I have no money to go back and forward to my home country and then to Japan again. Help please...