Sir, l think my question was not detailed enough to you. I got this L visa here in the mainland.

I had a working Z here in the mainland before, and now that my contract has ended it's been changed to an L (one month single entry). Now l want to go out to Hongkong and return within two weeks time. Can l return to the mainland on this same visa? lt was issued in mailand china and it wasn't an extension and l have not exited on it before.