US and Chinese representatives discussed TikTok, trade and the economy during a day of high-level talks in Madrid, a senior Treasury official said, as diplomacy between the world’s two biggest economies intensifies. A US delegation helmed by Treasury Secretary Scott Bessent and Trade Representative Jamieson Greer and a Chinese group led by Vice Premier He Lifeng met for almost six hours on Sunday, the official said. Included in the agenda are national security issues and the status of TikTok, which faces a deadline this week to reach a deal to continue operations in the US. Officials were also expected to lay the groundwork for a potential meeting between Donald Trump and Xi Jinping. Meanwhile China ruled that Nvidia violated anti-monopoly laws with a high-profile 2020 deal, ratcheting up

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