China's liquefied natural gas (LNG) imports jumped 47 percent in November from a year earlier to a record 2.66 million tonnes, data showed on Wednesday, as a cold snap spurred demand for gas to use in heating. China's buying spree, along with Japanese demand, pushed Asian spot LNG prices to new 2016 highs this week. Analysts said companies bought in anticipation of better demand during the winter months in the world's top energy market.