Fracking is shorthand for hydraulic fracturing, a type of drilling that has been used commercially for 65 years.
The climate of Shanghai in december is bad. The weather in december in Shanghai is relatively dry (with 67mm of rainfall over 7 days). The weather's not getting better compared to the previous month since in november there is an average of 59mm of rainfall over 6 days. The climate is quite cold here the month of december, but it is endurable when dressing cosy.
In Shanghai, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. The clearer part of the year in Shanghai begins around September 1 and lasts for 6.5 months, ending around March 16.