特朗普称对中美元首会晤持乐观态度，外交部回应

Group 1 - The core viewpoint of the article emphasizes the importance of summit diplomacy in guiding China-U.S. relations, highlighting the strategic and long-term nature of the discussions between the two leaders [1] - The Chinese side expresses a willingness to work with the U.S. to achieve positive outcomes from the upcoming meeting, aiming to provide new guidance and inject new momentum into the stable development of China-U.S. relations [1] - The spokesperson indicated that specific details regarding the meeting will be released in due course [2]