(Adds diplomat's comments on Chinese soybean purchases, Hong Kong protests, Xinjiang minorities)
NEW YORK, Sept 26 (Reuters) - China's top diplomat said on Thursday that China was willing to buy more U.S. products and said trade talks would yield results if both sides "take more enthusiastic measures" to show goodwill and reduce "pessimistic language" in their trade dispute.
Wang Yi, China's state councillor and foreign minister, said in response to questions from Reuters that the Trump administration had shown goodwill by waiving tariffs on many Chinese products.
"And so, (on) the Chinese side, we are willing to buy more products that are needed by the Chinese market," Wang said on the sidelines of the United Nations General Assembly.
"We hope both sides can take more enthusiastic measures, reduce pessimistic language and actions. If everyone does this, talks will not only resume, but will proceed and yield results."
The United States and China are preparing for another round of high-level trade talks in early October in Washington to try to find a way out of their nearly 15-month trade war.
The world's two largest economies have heaped hundreds of billions of dollars in tariffs on each other's products, roiling financial markets and disrupting global supply chains.
Trump on Wednesday said that a trade deal with China could come sooner than people think, and praised the Chinese purchases.
In his speech to the annual gathering of world leaders on Tuesday, Trump issued a stinging rebuke of China's trade practices and state-led development model. He said that he would not accept a "bad deal.".
Reuters' report of Wang's remarks caused U.S. stocks to pare losses and briefly turn positive on Thursday afternoon, capping selling driven by the impeachment inquiry opened by Democrats in Congress of Trump, a Republican.
Chinese importers last week purchased about 600,000 tonnes of U.S. soybeans, or about 10 shiploads, a market analyst said. These could soon grow to 6 million tonnes after new tariff waivers were issued by China, said Li Qiang, chief analyst at Shanghai JC Intelligence Co Ltd.
China purchased about 32 million tonnes of American soybeans in 2017 before imposing retaliatory tariffs last year.
"I would say that mood music, if you will, is very positive going into the negotiations," White House economic adviser Larry Kudlow said on Fox Business Network.
When asked by Reuters if U.S. criticism of China's policies on Muslim minority Uighurs in Xinjiang and Hong Kong political protests could affect trade talks, Wang said: "We hope trade talks can have a loose and good foreign environment."
China has been widely condemned for setting up complexes in Xinjiang that it describes as "vocational training centers" to stamp out extremism and give Uighur people new skills. The United Nations says at least 1 million ethnic Uighurs and other Muslims have been detained.
Trump called for an end to religious persecution on Monday at a U.S. event on the sidelines of the annual U.N. gathering, which featured a woman whose Uighur father has been imprisoned in China.
The United States led more than 30 countries in condemning what it called China's "horrific campaign of repression" against Muslims in Xinjiang at a second event on Tuesday.
"The Chinese side does not accept any criticism that is not based on facts. Xinjiang has not had any violent incident in three years," Wang said.
Months of sometimes violent demonstrations show no sign of letting up in Hong Kong where protesters are angry about what they see as creeping interference by Beijing in their city's affairs despite a promise of autonomy.
"What is the basis for criticizing China? For Hong Kong, right now, it's the violent actors that are violating the rule of law, that are disrupting public order," Wang said. (Reporting by David Lawder, Koh Gui Qing and Michelle Nichols; editing by Grant McCool)