US chief delegate Christopher Hill said in Beijing Saturday night that every relevant party was operating for the final document, and it is hard for the document to come out Sunday.

Hill,also US Assistant Secretary of State, told reporters upon his arrival at hotel that during the "pretty important" day on Saturday,it is a key moment that China distributed a text based on the issues talked by the six parties before.

"The Chinese text represents a good basis for future negotiations and future discussions," said Hill, acknowledging that it is also "a good basis for final document and final agreement."

"We know it takes time," he said.

The US delegation held one-on-one meetings with delegations of the Republic of Korea (ROK), Japan, the Democratic People's Republic of Korea (DPRK) and China.

Meanwhile, the six parties held a meeting of the delegation chiefs Saturday.

Hill expressed his appreciation for the Chinese delegation's efforts in drafting the document. "It's really noticeable how much work they do."

Source: Xinhua