Foreign Minister Wang Yi said China "cannot accept the allegations" that China's words are not being matched by actions in the South China Sea.
China agrees the United Nations Security Council should take further actions and pass a new resolution on the Democratic People's Republic of Korea (DPRK) following its nuclear test earlier this month.
A joint news briefing by Foreign Minister Wang Yi and visiting US Secretary of State John Kerry was delayed for about three hours before finally beginning on Wednesday afternoon.
Top diplomats from Beijing and Washington found more common ground on Wednesday on key issues including the latest nuclear test by Pyongyang.
Chinese Foreign Minister Wang Yi Wednesday holds talks with visiting US Secretary of State John Kerry.
Foreign Minister Wang Yi said "Taiwan is a core issue affecting the China-US ties" as he urged Washington to "take concrete actions to support the peaceful development of cross-Straits relations".
Foreign Minister Wang Yi hopes US Secretary of State John Kerry's visit will 'strengthen strategic mutual trust' and 'eliminate strategic doubts'.
With US Secretary of State John Kerry set to arrive in Beijing, Foreign Ministry spokeswoman Hua Chunying said at a news briefing in the capital on Tuesday that US officials must "play a constructive role ... instead of pointing fingers at others".
US Secretary of State John Kerry began a two-day visit to China on Tuesday. His visit comes at an important juncture as both Beijing and Washington need to shore up greater political will to properly handle the differences.
The United States Secretary of State John Kerry will visit China from Jan 26 to 27, at the invitation of Chinese Foreign Minister Wang Yi.
The US-China Business Council (USCBC) is calling for the continued building of strong, mutually beneficial commercial ties between the US and China.
