I am working in China more than three years. I had working visa. Now my working has expired on 1st j

I am working in China more than three years. I had working Z type. Now my working Z type has expired on 1st January 2018. I have again applied on 27th December 2017, collection date is 18th January 2018. I called immigration but they told me it is still in investigation process. Today is 12th January , should I worry ?