During the Asean Regional Forum in Manila, Wang said sanctions highlighted the worldwide community's opposition to the North's nuclear weapons programme and continued missile tests.
The communist state came to Manila for the ASEAN Regional Forum amid a torrent of global criticism over recent tests of intercontinental ballistic missiles which prompted the UN Security Council to adopt a fresh set of crippling sanctions Saturday.
"(The ARF) was a venue where North Korea could keenly feel how isolated its diplomatic position is.
Tillerson aide R.C. Hammond said that after a productive first day, Tillerson spent several hours preparing for Day 2.
"Do not violate the U.N.'s decision or provoke worldwide society's goodwill by conducting missile launching or nuclear tests", Wang said he told North Korea's Ri.
Ri hasn't spoken publicly since arriving in the Philippines.
North Korea said the sanctions infringed its sovereignty and it was ready to give Washington a "severe lesson" with its strategic nuclear force in response to any United States military action. Repeating a threat made a number of times since the recent intercontinental ballistic missiles (ICBM) tests, Ri said that all of the US was now within striking range of Pyongyang's missiles. Concerns were heightened late last month when tests of an intercontinental ballistic missile indicated Pyongyang may be within a year or two of obtaining the technology to reach the USA with nuclear missiles.
The US-drafted resolution imposed a full ban on North Korea's exports of coal, iron, iron ore, lead, and lead ore, as well as fish and seafood. It also prohibits countries from increasing the number of North Koreans working overseas and bans new joint ventures with the North as well as any new investment in current joint ventures. She says it was a "very, very good outcome".
On Saturday, the UN Security Council unanimously adopted Resolution 2371, tightening sanctions against North Korea. But there were no signs the US would acquiesce to China's call for a quick return to negotiations.
Tillerson's reluctance to sit down with his North Korean counterpart is despite his growing push for Pyongyang to return to the negotiating table with the U.S. Tillerson said this week that such talks would have to be predicated on the North giving up its nuclear weapons aspirations and that the conditions for such talks haven't yet been met by North Korea's government.
Yet another American president is enlisting China to put the squeeze on North Korea. The regime threatened "strategic" and "physical" actions against the US, which spearheaded the sanctions.
Lavrov told reporters that he and Tillerson agreed to preserve a diplomatic channel that Russian Federation had earlier suspended as a reaction to the sanctions, the Associated Press reported.
It added that Japan and South Korea "kowtowed blindly" to the U.S. China's position appeared to reflect positive movement following an unrelenting effort by Trump to enlist Beijing's aid in curbing Pyongyang's military buildup.
He also said there will be no negotiations on its nuclear and missile programs unless the US gives up its "hostile" policy toward his nation. Aside from calling for more sanctions, Trump's approach has centered on enlisting China - the North's biggest trading partner - and others to lessen ties to Pyongyang. Instead, the USA was represented at the dinner by Thornton, whose official title is acting assistant secretary of State for East Asia and Pacific Affairs.