"The final goal of both sides' negotiations is to end the trade war and cancel all additional tariffs", Gao said.
The move comes as Washington and Beijing - the world's two largest economies - are locked in a bitter trade dispute.
"In contrast, (Chinese) diplomats in the USA are of course, able to take full advantage of our open society", the official told the BBC. He made the comments on Thursday when he met delegates led by Evan Greenberg, chairman of the U.S.
The other important structural issues that make up the initial bulk of U.S. grievances like weak intellectual property protection for United States companies and forced technology transfers will be addressed in later talks.
And no decision yet from the White House how or whether that will proceed.
That's where U.S. President Donald Trump and China's leader Xi Jinping are expected to meet, and if all goes as planned.sign phase 1 of the trade deal. Trump delayed a tariff due to take effect Tuesday on $250 billion of Chinese goods but another increase on $160 billion of imports still is scheduled for December 15.
Chinese officials are working on the text of an agreement on trade in close contact with US negotiators, and have begun discussions on the next stage, Ministry of Commerce spokesman Gao Feng said at a regular briefing in Beijing Thursday.
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He said the two sides had agreed on currency provisions last week, which will be reviewed "as we put out the report".
In recent days, there have been positive signs from China.
On Tuesday, China's Foreign Ministry confirmed that China has "no difference" with the USA on the state of the talks, with spokesperson Geng Shuang clarifying that "what the US side said is true, and it is the same with our understanding on this agreement".
A day before, the U.S. Department of Agriculture confirmed net sales of 142,172 tonnes of U.S. pork to China in the week ended October 3, the largest weekly sale to the world's top pork market on record.
Noting that this thing has been in the works for some time, the official said it is not directly linked to any other part of the relationship.
On Wednesday, Li said China would remove business restrictions on foreign banks, brokerages and fund management firms, without giving details.
There were no signed papers for the "phase one" of the trade deal last week and things were agreed upon only in principle but it did provide a temporary respite from a 15-month old situation that had shaken markets and started fears of worldwide economic stagnation. "Ending the trade war as soon as possible and abolishing the imposition of tariffs will be conducive to the expansion of bilateral cooperation in a broader economic and trade field, including agriculture".