So i cannot leave china and hope to return without a new visa?

So i am in the process of getting a X type while studying here in beijijng for a year. But my old employer in Sweden wanst med to go through an education in singapore 29-31 of March this month in order to keep my job in sweden when i return. But then i would have to get a new type and go through this process again that isnt even done yet? Is there any other way to possibly travel to singapore for a few days and then return?