(Bloomberg) -- There’s no change to China’s conditions for making a trade deal with the U.S. as the two nations’ leaders prepare to meet this weekend, a government spokesman said.“China’s core concerns must be addressed properly,” Ministry of Commerce spokesman Gao Feng said at a regular briefing in Beijing Thursday, when asked about the three demands laid out by Vice Premier Liu He in May.In order to reach an agreement the U.S. must remove all extra tariffs, set targets for Chinese purchases of goods in line with real demand and ensure that the text of the deal is “balanced” to ensure the “dignity” of both nations, according to Liu.“We hope the U.S. side could drop its wrong practices, and we can solve the problems through equal dialogue and cooperation,” Gao said.The trade teams are in contact to prepare for the meeting, and the respective negotiators had a good phone call earlier in the week, Gao said, without clarifying whether the trade teams will meet in Osaka before the leaders’ encounter.Separately, Foreign Ministry spokesman Geng Shuang also briefed reporters in Beijing on Thursday.“The U.S.’s threat to add tariffs cannot scare us,” Geng said. “The Chinese people refuse to be misled and will not be intimidated. So I would like to offer a piece of advice to the U.S. -- starting a trade war and adding tariffs harms itself and others.”To contact Bloomberg News staff for this story: Miao Han in Beijing at mhan22@bloomberg.net;April Ma in Beijing at ama112@bloomberg.net;James Mayger in Beijing at jmayger@bloomberg.netTo contact the editors responsible for this story: Jeffrey Black at jblack25@bloomberg.net, Sharon ChenFor more articles like this, please visit us at bloomberg.com©2019 Bloomberg L.P.