With everyone putting down new and/or revised "red lines", be it on Syria or North Korea, it was now China's turn to reveal its "red" or rather "bottom line", and in a harshly worded editorial titled "The United States Must Not Choose a Wrong Direction to Break the DPRK Nuclear Deadlock on Wednesday" Beijing warned it would attack North Korea's facilities producing nuclear bombs, effectively engaging in an act of war, if North Korea crosses China's "bottom line."

The editorial in the military-focused Global Times tabloid, owned and operated by the Communist Party's People's Daily newspaper, said that North Korea's nuclear activities must not jeopardize northeastern China, and that if the North impacts China with its illicit nuclear tests through either "nuclear leakage or pollution", then China will respond with force.

"China has a bottom line that it will protect at all costs, that is, the security and stability of northeast China... If the bottom line is touched, China will employ all means available including the military means to strike back. By that time, it is not an issue of discussion whether China acquiesces in the US' blows, but the Chinese People's Liberation Army (PLA) will launch attacks to DPRK nuclear facilities on its own."