The Shanghai Composite slipped 0.2% to 4,218 on Tuesday, while the Shenzhen Component Index fell 0.3% to 15,854, with both benchmarks retreating from multi-year highs as fading hopes for US-Iran peace negotiations dampened market sentiment.
President Trump recently said the US-Iran ceasefire was on "massive life support" and rejected Tehran's latest peace proposal, raising concerns that disruptions in the Strait of Hormuz could persist. Markets were also focused on the upcoming Trump-Xi meeting, with investors hoping the talks will at least preserve the fragile US-China trade truce.
Beyond trade, the two leaders are also expected to discuss the Middle East conflict and Taiwan.
Trump is set to arrive in Beijing on Wednesday evening, while the US plans to host Xi Jinping during a reciprocal visit later this year.
Notable decliners included Foxconn Industrial Internet (-2.3%), Hygon Information Technology (-2.5%), Contemporary Amperex Technology (-0.9%), and Sungrow Power Supply (-1.7%).

Sumber : Trading Economics