The Shanghai Composite fell 0.3% to 3,880 and the Shenzhen Component declined 0.1% to 13,439 on Thursday as investors turned cautious ahead of high-level US-China talks, including preparations between US Treasury Secretary Scott Bessent and Chinese Vice Premier He Lifeng before the September 24 summit between Presidents Donald Trump and Xi Jinping in the US. Artificial intelligence, tariffs, the yuan, agricultural purchases, rare-earth export restrictions and the possible extension of a trade truce are expected to feature in the discussions. A Goldman Sachs Group Inc. survey found that 46% of offshore investors and 38% of onshore investors expect Chinese stocks to rise after the meeting, although ETF flows and options positioning remain cautious, according to JPMorgan Chase & Co. strategist Tony Lee. The yuan has strengthened around 4% against the dollar this year, but analysts expect Beijing to resist significant further appreciation because of its reliance on exports.