Beijing accuses the Trump administration of flip flopping after agreeing to avoid trade sanctions on $50 billion of Chinese goods.
Summit between President Donald Trump and North Korean leader Kim Jong Un was set for June 12 in Singapore but US president called it off last week.
Promise comes after US last week disinvited China from major military exercise.
Visit comes as US is battling opioid abuse emergency that is killing more than 60,000 people annually.
Brazen and aggressive - secret report allegedly accuses China of widespread interference in Australia.
Tough negotiations lie ahead as North Korea has rejected unilateral disarmament, calling instead for complete denuclearization of the Korean peninsula.
With the investigation of ministers and top bureaucrats, the country appears to be joining a regional trend of anti-graft crackdowns.
Lee Myung-hee accused of verbally and physically assaulting employees at home, airline affiliated hotel; eldest daughter Cho Hyun-ah made headlines in 2014 for infamous"nut rage" incident.
An emphasis on manufacturing, the quick rise of a middle class, and a recent anti-corruption effort put the two countries on the same track.
North Korea said Friday it is still willing to sit for talks with the United States 'at any time, [in] any format'.
North Korea said Friday that it was still willing to sit for talks with the United States “at any time, (in) any format,’’ after President Donald called off a summit with the North’s leader, Kim Jong Un.
South Korean resident 'perplexed' by decision, urges U.S., North Korea to resolve impasse.