Asian markets opened lower on Tuesday, defying positive momentum from Wall Street and dampening hopes that the Trump-Xi summit would deliver breakthrough trade agreements. The broad-based decline reflects investor caution ahead of the meeting's conclusion, with technology and export-heavy stocks leading losses across major indices.

President Trump and Chinese leader Xi Jinping's discussions enter their final day with markets hoping for concrete progress on tariffs and commercial cooperation. The meeting represents a critical juncture in the trade dispute that has roiled global markets for months, with both sides under pressure to reach meaningful compromises.

The White House indicated China expressed interest in purchasing more U.S. oil, potentially reducing its reliance on Iranian oil imports. This energy sector development could provide a framework for broader economic agreements between the world's two largest economies, addressing one of several contentious issues on the negotiating table.

Without substantial deal announcements by day's end, investors brace for continued market volatility as trade uncertainty extends into 2019. The lack of definitive progress threatens to undermine recent optimism in global equity markets.