Via Investing In Chinese Stocks blog,
The 2016 La Nina is set to be bigger than 1998 and that was one of the strongest ever. It was a bad hurricane season in the Southeast United States, and the effects of La Nina lasted for more than 2 years, eventually draining natural gas inventories due to colder than normal winters, sending prices to $10 / MMBtu.
China is also concerned due to flooding and the effect on food prices.