"China needs a smooth relationship with South Korea in order to maintain its own geostrategic interests over the Korean Peninsula", he said.
The South Korean army is reportedly on course to launch a combat unit consisting of drone bots sometime next year, in a move that signals a new era of drone bots in the military.
On Wednesday, a U.S. B-1B bomber joined the joint U.S.
State-run Jilin Daily published a lengthy article with the headline "Knowledge about Nuclear Weapons and Protection", amid strong war rhetoric between North Korea and the U.S. after a recent long range missile test by Pyongyang.
The US has previously deployed bombers as a show of force after North Korean missile or nuclear tests.
Thirteen of them, including Angola, Cuba, Mozambique, Tanzania, Iran, Sri Lanka, Myanmar and Syria, have been linked with North Korea's military.
North Korea, which denounces such drills, said at the weekend that the recent war game pushed tensions on the peninsula toward "a flare-up".
"In some cases, these mostly undemocratic regimes received military training from North Korea; in others, they received or exported military related equipment to or from North Korea", the report said.
But Chinese leaders have criticised the nuclear build-up of Kim Jong-Un's regime as well as lambasting the US and South Korea for escalating tensions.
A United Nations spokesman said Feltman will discuss "issues of mutual interest and concern" with Foreign Minister Ri Yong Ho and Vice Minister Pak Myong Guk during his visit, which ends on Friday - as does the military drill.
A US B-1B bomber flew over the Korean peninsula on Wednesday, Seoul's defence ministry said, as part of a major joint air exercise slammed by the North as an "all-out provocation" that could trigger a nuclear war. Last time it was done in November shortly before the US President Donald Trump's visit to South Korea as part of his Asia tour.
Zhang Liangui, a professor of global strategic research at ChinaÂ's Central Party School, said: "North Korea has fired a new missile that can reach the U.S. and the USA is conducting large scale navy drills with South Korea".
The US and South Korea kicked off the five-day war games - called Vigilant Ace - on Monday, with more than 200 aircraft, which have been conducting mock attacks on North Korea in different war scenarios. -South Korean war games, which it claims are invasion rehearsals. China is North Korea's lone major ally and fears widespread instability on its border. It comes days after North Korea launched its most powerful ballistic missile yet.
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