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.
Shanghai is known for hot and humid summers, but surprisingly its winters can be bitterly cold. The city is also vulnerable to typhoons in the summer and autumn, although these usually pass without causing major damage.