Chinese President Xi Jinping urged President Trump to exercise restraint over tensions with North Korea during a phone call Friday night, Chinese state media reported.

After a week of threats and counter-threats between Washington and Pyongyang, Xi urged both sides not to do anything that would aggravate tensions, China’s CGTN state television network reported.

But North Korea continued to fuel tension Saturday, with the Rodong Sinmun newspaper reporting that almost 3.5 million people, including students and retired soldiers, have asked to join or re-join the North Korean military to fight against the United States over the latest sanctions it encouraged through the U.N. Security Council.

“All the people are rising up across the country to retaliate against the U.S. thousands of times,” said the newspaper, the mouthpiece of the ruling Workers’ Party. The report was almost certainly bluster rather than fact, but it showed that the North Korean regime is not backing down in the face of Trump’s threats.

Meanwhile, Japan finished installing surface-to-air missile interceptors in the western prefectures that North Korea said would be in the flight path of any missiles launched toward Guam, where North Korea is threatening an “enveloping strike.”

In South Korea, the government began the environmental survey needed to complete the deployment of the Terminal High Altitude Area Defense (THAAD) missile defense system — a sign that the liberal government is now trying to expedite the deployment.