U.S. and Chinese officials on Wednesday, July 31, began a 12th round of trade talks at the Xijiao State Guesthouse in Shanghai, China.

U.S. Treasury Secretary Steven Mnuchin and U.S. Trade Representative Robert Lighthizer met with Chinese Vice Premier Liu He and his negotiating team that included Minister of Commerce Zhong Shan and other officials.

The Shanghai talks followed a June agreement between President Trump and Chinese leader Xi Jinping made at the Osaka G-20 Summit last month.

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The aim of the Shanghai talks was to discuss U.S.-China trade relations and to end the tariff war as well as the costly fight over trade and China’s technology aspirations.

Wednesday’s meeting between the two delegations ends about 40 minutes earlier.

Neither the U.S. nor the Chinese delegation speaks to reporters before the U.S. officials leave for the airport.

“The meetings were constructive,” said White House in a brief statement shortly after the meeting was over. It stated that negotiations would continue in Washington, D.C. in early September. But no exact dates were mentioned.

The statement said that the topics discussed during the meeting included forced technology transfer, intellectual property rights, services, non-tariff barriers, and agriculture.

China confirmed its commitment to buy more U.S. agricultural exports, according to White House Press Secretary statement.

As analysts and China experts anticipated, a quick breakthrough was unlikely in Shanghai. Both sides had serious concerns to contend.

Chinese leaders are resisting Washington’s pressure to roll back plans for government-led development of industry leaders in robotics, artificial intelligence, and other technologies.

Washington contended that the Chinese’s endeavors rely on pilfering or forcing foreign companies to hand over technology in return for doing business in China.

President Trump raised tariffs on $250 billion worth of Chinese imports; the Chinese regime countered by taxing $110 billion of U.S. imports.

U.S. negotiators were unwilling to yield to Chinese demands for the U.S. tariffs to be dropped immediately because the Trump administration wanted to ensure that China keeps its agreement.

The Shanghai talks probably included China’s tech giant, Huawei Technologies Ltd. Washington sees Huawei as a national security threat and put the company on a security list, blocking it from buying U.S. components and technology.

With so much as on the negotiating table, it is to be expected for the trade talks to follow through in several meetings.