It said Seoul hopes the decision will lead to both sides stopping slander and propaganda activities.
China and North Korea share a lengthy border.
Moscow hails North Korea's decision to suspend nuclear tests as a step towards denuclearization of the Korean Peninsula, Russian president's press secretary Dmitry Peskov said on Monday, TASS reports.
This time South Korea's President Moon has said Mr Kim is not asking for the withdrawal of USA troops from the Korean Peninsula as a condition for abandoning his nuclear weapons. "If North Korea goes the path of complete denuclearisation starting from this, then a bright future for North Korea can be guaranteed".
In this Sunday, April 22, 2018 image taken from video footage by China's CCTV via AP Video, an injured passenger receives medical treatment at a hospital following a bus accident in North Hwanghae province, south of Pyongyang, North Korea.
The leaders of the two Koreas will meet on Friday for their first summit in over 10 years, with the event seen as key to putting North Korea's denuclearization on track after repeated global attempts have ended in failure.
After initially welcoming Pyongyang's statement on halting nuclear and missile tests, Trump sounded a more cautious note on Sunday.
A White House National Security Council spokesman told Reuters on Sunday the Trump administration would not make "the same mistakes of the past", suggesting North Korea would need to dismantle much of its nuclear programs for USA concessions.
Kim has said he is willing to place his nuclear program up for negotiation. It was later halted again in 2015 and re-started in 2016 in response to the North testing a hydrogen bomb.
Western visitors to the North once averaged around 5,000 a year, but numbers have been hit recently by a United States travel ban -- Americans accounted for around 20 percent of the market -- and official warnings from other countries. Under North Korean rules, all visitors should be accompanied by minders.
China, which tends to be quite heavy-handed in its reaction to Chinese fatalities overseas, may feel compelled to take a more cautious approach to an incident in North Korea given recent developments in the world of diplomacy.
Chinese tourism to the North has continued even though Beijing has enforced a slew of United Nations sanctions over Pyongyang's nuclear weapons programme.