China's new ambassador to Washington, Qin Gang, said great potential awaited bilateral relations, striking an optimistic tone as he arrived at his new post amid deeply strained ties.

Iran PressAmerica: Qin's arrival comes days after high-level talks in the northern Chinese city of Tianjin between US Deputy Secretary of State Wendy Sherman and senior Chinese diplomats ended with both sides signaling that the other must make concessions for ties to improve.

According to US media, Qin, 55, a vice foreign minister whose recent past portfolios have included European affairs and protocol, is replacing China's longest-serving ambassador to the United States, Cui Tiankai, 68, who last month announced his departure after eight years in Washington.

"I firmly believe that the door of China-U.S. relations, which is already open, cannot and should not be closed," Qin told reporters at his residence in the U.S. capital after arriving from the airport.

The China-US relationship has come to a new critical juncture, facing many difficulties and challenges.

Relations between Beijing and Washington deteriorated sharply under former President Donald Trump, and Biden has maintained pressure on China, stepping up sanctions on Chinese officials. 219