China’s foreign ministry denounced any suggestion that it was involved in North Korea’s Internet shutdown on Monday. Ministry spokeswoman Hua Chunying said reports that China cut North Korea’s Internet were “irresponsible.” The country experienced a massive Internet outage for more than nine hours on Monday. China is North Korea’s only Internet link to the rest of the world. Prior to the Internet outage, President Obama threatened “measured retaliation” against North Korea for the Sony hacking, which the U.S. has blamed on the Hermit Kingdom. Hua also called on the U.S. and North Korea to discuss the Sony hacking. “We have noted recent U.S. remarks and comments from North Korea. We believe that the United States and North Korea should communicate about this,” she said.