The Monday launch of five short-range projectiles came just days after North Korea fired two mid-range ballistic missiles in the latest defiance of U.N. sanctions.
"We hope that North Korea will not do anything that violates U.N. resolutions," China's foreign ministry spokeswoman Hua Chunying told reporters during a regular press briefing.
"All relevant parties should react with calm and restraint so as not to aggravate tensions," Hua said.
North Korea has stepped up its defiance since the U.N. Security Council imposed tougher sanctions earlier this month on the North to punish its fourth nuclear test and launch of a long-range rocket.
The Security Council strongly condemned North Korea's Friday launch of ballistic missiles, saying such launches were "unacceptable." (Yonhap)