Asia-Pacific markets opened mixed as investors kept an eye on the talks between the U.S. and China in Spain, and awaited a slate of data from Beijing.U.S. and Chinese officials began talks in Madrid Sunday to discuss key national security, economic, and trade issues, including the upcoming deadline to divest Chinese short video app TikTok and U.S. tariffs.Delegations led by U.S. Treasury Secretary Scott Bessent and U.S. Trade Representative Jamieson Greer met with their counterparts, Chinese Vice Premier He ...